masterbruce
Sorry, Metalmanx, spiderman didn't come out on top 
Round One
Nightcrawler v. Storm: Nightcrawler is incredibly powerful, no doubt about it, but we figure Storm can put enough distance between her and the elf while summoning a hurricane that would prevent any safe teleportation. It's hard to teleport and attack when you're freezing, can't see your target, and have a tornado-propelled truck headed at your head.
Captain America v. Iceman: Sorry, Cap, but you're about to be trapped in an ice block. Again.
Sub-Mariner v. Mr. Fantastic: Intellect and preparedness have always been critical factors whenever Mr. Fantastic is in a conflict. There is no question that Namor is more powerful than Reed, but we know that deep down Reed doesn't trust the King of Atlantis, nor does he fail to prepare for a fight with the Sub-Mariner. After Doom, Namor is Mr. Fantastic's biggest rival. You can't stop the leader of the Fantastic Four if he has the time to prepare.
Round Two
Hulk v. Storm: There isn't much Storm can do that Hulk hasn't faced. Weather, no matter how severe, just isn't going to stop the Green Goliath. We figure Storm becomes an imprint on the side of an airborne bus.
Iceman v. Spider-Man: Spider-Man has the fortitude and strength to take down Ghost Rider, but Iceman is just going to encase him in a block of ice. We don't care how tough Spidey is, he's not getting out of that one (if Cap can't, neither can Peter).
Round Three
Hulk v. Iceman: This was a really tough one for us to pick, but we went with Bobby Drake. Bobby is supposedly an Omega class mutant. We haven't seen him completely unleashed, but we have to consider the fact that Drake can manipulate water temperatures. Humans are made of 90% water. Hulk isn't quite human, but we're sure there's plenty of H20 to be frozen solid in his green blood. Iceman would have to let go a bit, but with a monster about to smash him, we think he would.
Mr. Fantastic v. Silver Surfer: Reed has had to deal with the Silver Surfer before. He's familiar with the Power Cosmic and the herald of Galactus. Like Doom and Namor, Reed is going to have an answer to this situation.
Round One
Human Torch v. Invisible Woman: You can't light a flame if there's no oxygen in your air-tight bubble. Sue would hate to take down Johnny, but we're assuming these two are given no alternative but to fight.
Black Panther v. Daredevil: Completely outclassed in this fight, Matt Murdock misses a few court dates after T'Challa kicks his ass.
Cyclops v. Luke Cage: Cyclops isn't stupid enough to get close to Luke Cage. He blasts a pit big enough and deep enough to hold the former Hero for Hire and uses his force beams to push Luke on down. Cage might be invulnerable, but he can't fly.
Gladiator v. Hawkeye: If you think Hawkeye even has a prayer you need to read more comics.
Round Two
Thor v. Invisible Woman: Sue has buckled before when her shields and powers are put under extreme duress. If there's anyone to take down the Invisible Woman, shields or not, it's the God of Thunder.
Black Panther v. Wolverine: Wolverine has the healing ability but Panther has the intellect. Panther possesses many gadgets and is no doubt aware that vibranium, in particular variations of it, can actually disrupt and damage adamantium. It's not going to be a pretty fight, but the Panther's resources pull him through this one.
Round Three
Thor v. Black Panther: Not a chance.
Iron Man v. Gladiator: Stark is good, but he's not going to do much against Gladiator. Sorry Tony, go back to devising ways to piss off your fellow heroes.
Round One:
Magneto v. Stilt-Man: Squish.
Super Skrull v. Blackheart: Those of you who are not too familiar with Blackheart might want to do a bit of research on his powers. This demon is definitely a force to be reckoned with despite not being a frequent player in the Marvel Universe. The Super Skrull doesn't stand a chance.
Vulcan v. Sebastian Shaw: Shaw might have more experience but Vulcan outclasses him in every way possible.
Thanos v. Fin Fang Foom: Even without his Infinity Gems, Thanos is massively powerful.
Round Two:
Carnage v. Blackheart: We didn't get enough joy when Sentry ripped Carnage in half. We really want to see what the Lord of Darkness would do to Cletus Cassaday. Being torn in two would probably be a pleasure cruise.
Mandarin v. Ultron: Yet another fight that is unbelievably unfair. Ultron takes down Mandarin in no time.
Vulcan v. Thanos: In theory Vulcan might be more powerful, but not by much. We figure Vulcan's aforementioned lack of battle experience will cause him to falter in a match with a being that nearly conquered the Marvel Universe.
Round Three:
Magneto v. Blackheart: We love Magneto and think he totally rocks, but the Master of Magnetism isn't going to have much of a chance against a creature from Hell. Blackheart is only vulnerable to magic while Magneto has shown a weakness to telepathy. This one was over before it began.
Ultron v. Thanos: We would have loved to see Ultron take on Magneto. That would have been fun. Back to the battle at hand, Thanos walks all over Ultron. We don't care if he's made out of adamantium.
Round One:
We know this is cheap, but there honestly isn't a single battle in here that is even remotely close. Dr. Doom walks all over Arcade. The Absorbing Man swats the Goblin out of the sky. Loki turns Rhino into a frog. Do you think Bullseye honestly stands a chance against the time-traveling Kang? M.O.D.O.K. proves it's not a total loser and destroys Sandman. Nitro can blow up, but Juggernaut is invincible. Ronan is a powerful alien while Omega Red has big, white tentacles. Venom is overrated, but he'll have no problem taking down Deathbird. This round is over.
Round Two:
Loki v. Kang: Now this is a fight worth talking about. Ordinarily we'd say Loki wins this. Comparing power levels, it's clear that Loki is simply more gifted. But Kang can travel through time. Perhaps he kills a young Loki or manipulates events so that Loki is destroyed by Thor. Either way Kang wins.
M.O.D.O.K. v. Juggernaut: This one was obvious to us, but we loved the imagery. Juggernaut is virtually invincible, so A.I.M.'s sentient weapon isn't going to do much to him. We imagine that Juggernaut punts him like a football into the ocean.
Round Three:
Dr. Doom v. Kang: We would love to see this fight brought to life by modern comic artists. Kang is a master of traveling through time, but Doom is also gifted at manipulating events in the past. Heck, Doom is a master of every dimension or realm he's ever come across. Kang is clever, but Doom is smarter.
Juggernaut v. Ronan: Although Juggernaut is powerful, Ronan typically has the support of the Kree race as well as possession of the Ultimate Weapon. The Weapon allows Ronan to rearrange matter. Juggernaut isn't going to do much against a power of that magnitude.

Round One
Nightcrawler v. Storm: Nightcrawler is incredibly powerful, no doubt about it, but we figure Storm can put enough distance between her and the elf while summoning a hurricane that would prevent any safe teleportation. It's hard to teleport and attack when you're freezing, can't see your target, and have a tornado-propelled truck headed at your head.
Captain America v. Iceman: Sorry, Cap, but you're about to be trapped in an ice block. Again.
Sub-Mariner v. Mr. Fantastic: Intellect and preparedness have always been critical factors whenever Mr. Fantastic is in a conflict. There is no question that Namor is more powerful than Reed, but we know that deep down Reed doesn't trust the King of Atlantis, nor does he fail to prepare for a fight with the Sub-Mariner. After Doom, Namor is Mr. Fantastic's biggest rival. You can't stop the leader of the Fantastic Four if he has the time to prepare.
Round Two
Hulk v. Storm: There isn't much Storm can do that Hulk hasn't faced. Weather, no matter how severe, just isn't going to stop the Green Goliath. We figure Storm becomes an imprint on the side of an airborne bus.
Iceman v. Spider-Man: Spider-Man has the fortitude and strength to take down Ghost Rider, but Iceman is just going to encase him in a block of ice. We don't care how tough Spidey is, he's not getting out of that one (if Cap can't, neither can Peter).
Round Three
Hulk v. Iceman: This was a really tough one for us to pick, but we went with Bobby Drake. Bobby is supposedly an Omega class mutant. We haven't seen him completely unleashed, but we have to consider the fact that Drake can manipulate water temperatures. Humans are made of 90% water. Hulk isn't quite human, but we're sure there's plenty of H20 to be frozen solid in his green blood. Iceman would have to let go a bit, but with a monster about to smash him, we think he would.
Mr. Fantastic v. Silver Surfer: Reed has had to deal with the Silver Surfer before. He's familiar with the Power Cosmic and the herald of Galactus. Like Doom and Namor, Reed is going to have an answer to this situation.
Round One
Human Torch v. Invisible Woman: You can't light a flame if there's no oxygen in your air-tight bubble. Sue would hate to take down Johnny, but we're assuming these two are given no alternative but to fight.
Black Panther v. Daredevil: Completely outclassed in this fight, Matt Murdock misses a few court dates after T'Challa kicks his ass.
Cyclops v. Luke Cage: Cyclops isn't stupid enough to get close to Luke Cage. He blasts a pit big enough and deep enough to hold the former Hero for Hire and uses his force beams to push Luke on down. Cage might be invulnerable, but he can't fly.
Gladiator v. Hawkeye: If you think Hawkeye even has a prayer you need to read more comics.
Round Two
Thor v. Invisible Woman: Sue has buckled before when her shields and powers are put under extreme duress. If there's anyone to take down the Invisible Woman, shields or not, it's the God of Thunder.
Black Panther v. Wolverine: Wolverine has the healing ability but Panther has the intellect. Panther possesses many gadgets and is no doubt aware that vibranium, in particular variations of it, can actually disrupt and damage adamantium. It's not going to be a pretty fight, but the Panther's resources pull him through this one.
Round Three
Thor v. Black Panther: Not a chance.
Iron Man v. Gladiator: Stark is good, but he's not going to do much against Gladiator. Sorry Tony, go back to devising ways to piss off your fellow heroes.
Round One:
Magneto v. Stilt-Man: Squish.
Super Skrull v. Blackheart: Those of you who are not too familiar with Blackheart might want to do a bit of research on his powers. This demon is definitely a force to be reckoned with despite not being a frequent player in the Marvel Universe. The Super Skrull doesn't stand a chance.
Vulcan v. Sebastian Shaw: Shaw might have more experience but Vulcan outclasses him in every way possible.
Thanos v. Fin Fang Foom: Even without his Infinity Gems, Thanos is massively powerful.
Round Two:
Carnage v. Blackheart: We didn't get enough joy when Sentry ripped Carnage in half. We really want to see what the Lord of Darkness would do to Cletus Cassaday. Being torn in two would probably be a pleasure cruise.
Mandarin v. Ultron: Yet another fight that is unbelievably unfair. Ultron takes down Mandarin in no time.
Vulcan v. Thanos: In theory Vulcan might be more powerful, but not by much. We figure Vulcan's aforementioned lack of battle experience will cause him to falter in a match with a being that nearly conquered the Marvel Universe.
Round Three:
Magneto v. Blackheart: We love Magneto and think he totally rocks, but the Master of Magnetism isn't going to have much of a chance against a creature from Hell. Blackheart is only vulnerable to magic while Magneto has shown a weakness to telepathy. This one was over before it began.
Ultron v. Thanos: We would have loved to see Ultron take on Magneto. That would have been fun. Back to the battle at hand, Thanos walks all over Ultron. We don't care if he's made out of adamantium.
Round One:
We know this is cheap, but there honestly isn't a single battle in here that is even remotely close. Dr. Doom walks all over Arcade. The Absorbing Man swats the Goblin out of the sky. Loki turns Rhino into a frog. Do you think Bullseye honestly stands a chance against the time-traveling Kang? M.O.D.O.K. proves it's not a total loser and destroys Sandman. Nitro can blow up, but Juggernaut is invincible. Ronan is a powerful alien while Omega Red has big, white tentacles. Venom is overrated, but he'll have no problem taking down Deathbird. This round is over.
Round Two:
Loki v. Kang: Now this is a fight worth talking about. Ordinarily we'd say Loki wins this. Comparing power levels, it's clear that Loki is simply more gifted. But Kang can travel through time. Perhaps he kills a young Loki or manipulates events so that Loki is destroyed by Thor. Either way Kang wins.
M.O.D.O.K. v. Juggernaut: This one was obvious to us, but we loved the imagery. Juggernaut is virtually invincible, so A.I.M.'s sentient weapon isn't going to do much to him. We imagine that Juggernaut punts him like a football into the ocean.
Round Three:
Dr. Doom v. Kang: We would love to see this fight brought to life by modern comic artists. Kang is a master of traveling through time, but Doom is also gifted at manipulating events in the past. Heck, Doom is a master of every dimension or realm he's ever come across. Kang is clever, but Doom is smarter.
Juggernaut v. Ronan: Although Juggernaut is powerful, Ronan typically has the support of the Kree race as well as possession of the Ultimate Weapon. The Weapon allows Ronan to rearrange matter. Juggernaut isn't going to do much against a power of that magnitude.