OneDumbG0
Find Your Own Fire
Hmmm. OneDumbGo's version of the fight:
Superman and Magneto are their normal selves. Hulk is his current version, smart but able to be enraged whereby he loses his intellect. Dr. Doom has his normal armor. Assuming all characters know the other team is hostile, Supes would rush over to the Hulk and start pounding away. Hulk would get madder and madder and go toe-to-toe with a surprised but still determined Superman. Supes would go to his wide array of powers. Most likely, he'd be using super speed to hit Hulk who can't nail him in return. This however would seriously piss off Hulk who's ever increasing strength allows him to take Superman's increasingly violent blows.
Doom in the meantime has distracted Magneto with a Doombot made of teflon and/or nullified his powers using Sentinel copied technology. He studies the Hulk/Supes fight. Knowing Superman's nigh unlimited power potential, he'd get real careful as if he had to face Thor. Which means no straight up fighting. He'd probably use the magic Crimson Bands of Cytorrak to bind Superman to prevent him from utilizing his speed. Doom's got a backup plan because he'd probably think Supes would eventually break his way out, but Supes doesn't much to his surprise.
Supes proceeds to get pounded on by Hulk who's been thoroughly enraged. Doom lets Hulk have his merry way and returns to Magneto, who's finally destroyed his Doombot and/or broken the Sentinel power dampening field through subtle electromagnetic manipulation. Doom using one of his uncanny power absorption modules, now goads Magneto into releasing his full power. Mags obliges and creates an EMP which Doom partially absorbs with his power absorption module. He proceeds to blow Magneto away with his power gauntlets.
Unfortunately for Doom, Hulk's pounding Supes has actually worked against him, because Supes who sees no way out of the Crimson Bands of Cytorrak through his own strength, continues to goad Hulk into hitting him harder. Hulk gets more enraged at not being able to kill Supes and rages up and smashes him, but destroys the Crimson Bands of Cytorrak (once thought impossible until this fight!) in the process.
The feedback from destroying the Crimson Bands is tremendous and throws all involved for a loop. Doom gets magic feedback in particular as the spellcaster (I'm pretty sure his will is tied to the magic's strength). Supes has moments to recover and targets Doom, the magic user. He rips through his forcefield and tears most of his armor off revealing a scarred man underneath. Doom (sneaky devil that he is), perceives Supes' compassion for humans and convinces Superman that the Hulk forced him to help him. Supes isn't entirely gullible and goes ahead and crushes one of his hands anyway to prevent his magic incantations. Satisfied that Doom is too stunned to cast more magic (which he actually is) Superman turns his attention back to the Hulk.
Foolish alien though. Doom still retains his charged power module and charges up what remains of his armor. Doom is tired of subtle machinations and steps forward like the badass he is, he can't stand that another being made him kneel down. In the middle of Hulk's/Superman's throwdown, he throws himself into battle and grabs Superman from behind with his remaining gauntlet. Doom forces every erg of pent up EMP power directly into Superman's head. Superman keels over and Hulk kills him.
That would be the end, but like Tron said, "Doom shares victory with no one." Doom is now crippled, still dazed from the magic feedback and has busted armor and no power module and faces off against an entirely pissed off Hulk.
I'm still willing to give him 50/50 odds on that one. -.-b