I ve watched hxh up until chimera arc. Seriously i dont understand all this hype. Its a well written story with a few interesting characters, decent power scaling and thats pretty much it.
One piece has a far better universe and more epic characters-villains (donflamingo and crocodile>meruem). And while it has suffered plot wise at times(wano, arabasta) in general has delivered far more epic moments that hxh could ever hope to do.( Episode 0, ennies lobby, marineford, egghead).
So to conclude, i would give one piece a 7/10(universe, characters) and HXH a 7.5/10(consistency-power scaling) but one piece can easily reach 9/10 at its peak arcs while hxh a 8/10 at best.
One piece has a far better universe and more epic characters-villains (donflamingo and crocodile>meruem). And while it has suffered plot wise at times(wano, arabasta) in general has delivered far more epic moments that hxh could ever hope to do.( Episode 0, ennies lobby, marineford, egghead).
So to conclude, i would give one piece a 7/10(universe, characters) and HXH a 7.5/10(consistency-power scaling) but one piece can easily reach 9/10 at its peak arcs while hxh a 8/10 at best.