One Piece Episode 410

[poopdeville]

Luffy got the idea from Soru, but I assure you, Soru does not work by forcibly pumping blood through your circulatory system at a faster rate.

Well, I'm sure CP9 is in excellent cardiovascular health. They don't need to "forcibly" pump blood faster, because their hearts do it naturally. This is a bit of a tangent, but we are mostly in agreement.

Are you suggesting that Zoro should be able to cut logia users?

Not at the moment. I don't think he's strong/fast enough now. But I am sure his sword will be able to "cut nothing, and cut everything" by the end of the show.

On the other hand, the fact that Luffy could dodge the Amazon's arrows makes me think a generic Amazon is too weak to hurt a Logia user too (for the same reason). The way I see it, those arrows would have to be flying fast enough to do damage to the Logia user before he can change into his element. (Or surprise him, like how Luffy hit Ace and Smoker in Arabasta.)