The enemies are simply idiotic, the atmosphere is too loose to be fighting a shichibukai. I don't know, I just find it too dumb. The only worthwhile fight has been the Zorro vs the Samurai, all others have simply sucked ass. Sanji kicking ass was pretty good too. But overall, all the sillyness in the arc is overwhelming, they need to tone it down especially when going against one of the top guys, a shichibukai. It's understandable since the Water 7 arc was a very serious arc, but a couple of silly episodes should've been enough to release tension.
And we have that Oz zombie running around the whole place and no one can really take him seriously as an enemy. It's too dumb. It's fine to have sillyness a couple of chapters here, and a couple of chapters there, but when it's the entire arc, and no real tense atmosphere in it, the arc gets too boring and quickly. I guess you guys can't see it yet, on how awesome the next couple of arcs should be. Once you realize that you''ll be wishing this crap of an arc would be over.