NightBaron said:
lol
compare people in the same league
can marco beat whitebeard?
can aokiji or kizaru beat shanks?
Marco might beat whitebeard.He got some healing technique.So strictly speaking, it is almost impossible to injure marco. But I don't think oda will allow something like that.A phoenix can reborn as good as new, even after death.That's why the mythical type devil fruits are extremely rare. I am not a manga reader.I don't know anything about shanks. I don't even know if he's got a devil fruit power either.
So I can't say anything about him.