I say team 3.
Even if Team one are consisted of talented and skilled class 100 dude and that Team countain both brute power (A-Bomb) and finesse coupled with 80 ton (Namor), Hulk is a team buster of the higest order, especially in the World War Hulk Arc.
All other four members would have to team 2 just to stop the pain he would bring, because if they don't team up to try to pass the K.O., Hulk would just grow more powerful. And it's not even sure that the four of them would put him down.
And Skaar can gives him a hand. I don't know Skaar that much, so I can't say what effect he could have on the fight, but the point is: In this match, with three team of two, Team 3 win, because Hulk kicks ass.
Maxam was a great character
hulk took out hercules with like...3 shots. maxam stalemated with drax who also stalemated with professor hulk. namor is a non-factor. a-bomb might be tough durability wise, but against king hulk, probably goes down like the rest. and the pic of king hulk holding skaar by the neck like smelly shirt, most likely alludes to a superior strength set.
hulk goes on a rampage and beats all their asses', even his son's.