Poll
Superman got beaten (imo) by goku:
http://www.youtube.com/watch?v=0MW9Nrg_kZU
Anyway, my answer would be captain hindsight with his sidekicks: Shoulda, Woulda and Coulda
Goku VS Superman | DEATH BATTLE! | ScrewAttack!: http://youtu.be/oyl97TG8jbA
tl;dw:
Superman>Goku