I think the first was a bit better
Okay, I'm glad the eyebrow ring is gone from the piranha, but you replaced glitches with glitches and left several things alone when they needed fixing.
Bouncy terrain was annoying, as it cost you precious time for any small mistake. People could swim through land, which is unusual (you'd think they would stay there, to be safe, but they come out the other side). The speed burst is a good idea, but it just doesn't work: flinging your piranha into a bounce house is not a good idea. The warp points were unexplained and too small to bother using, plus they didn't take you very far. And for some reason it was very difficult to eat the small fish. Sometimes I could eat 3 in one pass, at others I was stuck flailing and dashing back and forth over them, watching as those last two fish I needed swam around, mocking me as the timer ran out for the third time. The alligators were a good source of blood, but I had one swim through an island and eat my 35 pound piranha with no warning, putting me back at a measly 5 pound small fry. At that, I just quit, seeing none of the advice from the last game had been taken into account.
And just so you know: an adult human has roughly 6 liters of blood in his/her system. It was weird to strip a man to a skeleton and only get 1 liter in reward, while giving a gator a few flesh wounds yielded more.
All in all, better in some respects, worse in others, still not what it could be.