User blog comment:Windindi/New DEATH BATTLES by WIndindi!! (In Order)/@comment-24281142-20150205013807/@comment-24281142-20150205021238

Titans are essentially just really big, naked, overheated stupid people with regeneration factors that can only be killed by cutting the nape of their neck. No giant laser beams, no super-speed, no creating hints out of thin air, none of that, so yeah Luffy has 100% fought worst things than them.

But that's not even what I was talking about. What I was is that Luffy is far stronger, has accomplished more, has a better variety of attacks, more destructive potential and is HIGHLY resistant to physical blows due to his elasticity. And Titan or not, Eren's got nothing on that last one.