Think about it. Yeah his durability has been proven to be complete and utter shit, but that's not what his fighting style revolves around to begin with. This chapter he became the first person to draw blood from Zoro since Fujitora, and considering that Pica threw a mountain at him and he was unfazed, that's a pretty solid feat. Zoro even commented on his straw manifestation's strength. I'm not even saying he's one of the top 5 Supernovas at this point, but he's certainly not too shabby either.