@taichokage: The thing is, OP characters ussually depend on speed and physical stats.
You'd be surprised by how few battles OP characters win if speed is equalized.It doesnt impact other in the HST and HxH etc that much but OP take a huge hit in performance.
Putting OP characters against faster guys is a death sentence for them more often than not.
That's because One Piece relies on physical ability like Super strength, unless the fighter is more DF focused like Enel. Even if speed is equalized, fighters like Whitebeard or Law could pretty much beat almost any HST fighter.
You also have to account for the fact that One Piece is still only 60% through it's run, and at the halfway point of Naruto or Bleach, neither were that strong either. We have yet to see Kaidou, Big Mom, Shanks go all out, Mihawk go all out, WB in his prime, Roger in his prime, Green Bull or even Fujitora go all out yet. Wano will most likely have Admiral to Mihawk level (although not stronger) swordsman, and we have yet to see the final weapon that supposedly could destroy the world.