goku should be able to defeat the living tribunal
But in response to this thread, I could picture Goku giving a number of superpowered Earth teams in Marvel like certain variants of the X-Men, Avengers and S.H.I.E.L.D. plenty of trouble. For DC Comics, not too many I can think of considering the highly powerful abilities of many of the popular teams among their universe. Street-level heroes and villains like the Batman Family and his rogues or Plastic Man could be easily dispatched and I could possibly picture Goku taking out Etrigan with high difficulty. But against foes with destructive potential greater than planet-level and having speeds FTL or greater, Goku would be screwed royally.