Don't know where this arc is going to stand when it ends, from fighting standpoint its probably going to edge out Enies Lobby and Alabasta, If we include the upcoming Monster trio fights this arc will have at least 6 fights that are good or better. So that's good its just that the arc has suffered so much from pacing, off screening and writing issues. So much so that for the first time an Oda flashback fell flat to most. It definitely has a shot at beating Thriller Bark potentially Skypiea as well. But it might be too late to surpass Enies Lobby and Alabasta