I'm somewhat disappointed from this chapter.
Luffy looses to a Logia type, again.
a few months back, Docotan (or what's his name) argued that the only worthwhile marines (and pirates) were Logia types. seems that it was right, and even a seemingly weaker logia marine (poison type, didn't even have a physical invulnerability) that isn't high ranked (head prison guard? no matter where you live, that's about 4 ranks below a normal general. it's around a corps commander rank, at best) and doesn't seem to be that strong (general impression, of course) is making short-work out of a 300mil bounty pirate.
that's being added to the fact that 11 high ranked pirates couldn't do shit to 2 marines and a shishibukai. and that it seems luffy can only win against logia if he can use their one and only weakness (rubber, water).
and since we know that luffy is about to learn haki usage very soon, it means that his future battles would be quite boring.
heck, the prison guard didn't even seem that strong. he didn't fight smartly, it's like Kizaru again, logia = win. nothing to do about it.