Average marvel guy vs. Superman
You take your average Joe-Schmo from Marvel Earth (Maybe 5'10", 175 lbs), and put him against Superman. The catch is, you give him a week of training and some background info on Superman first...
and the following items (assume he can use them all and abilities stack):
Super soldier syrem
Thors Belt
Crimson Gem of Cytorrak (Powers = Classic Juggernaut)
Carnage Symbiote (Under his Armor)
Hulkbuster Iron Man Armor
Mjolnir with Thors Gloves
Captain Americas Shield
Adamantium laced bones (just because)
Silver Surfers board (He can use it to fly as fast as SS, I know he shouldn't be able to, but without some speed here he gets crushed)
No BFR allowed for either contender. Who wins?