Realistically
supes
tie for hulk Thor and flash
ironman
fck boy bats
people forget hulk once took over a post apocalyptic earth killed all the heroes' etc. So hulk ties with Thor flash all three would be a nightmare if they wanted to take over. IM can do crazy shit with tech emps, hacking, monopoly on world necessities, global nuke strikes. Really bats is a man and if he did try to take over could and would be killed\token out the fastest.