[quote=@Masaki Haruna]
That's level 5. I'm not sure how that works but it's more leaning on hydrokinesis.
[/quote]

I see it more as expanding on the fact that blood is a liquid, and can be heated as well. If he can make it acidic, he can definetely learn to heat it up, if he ever gets to that level of power. Then I think it would be a pretty even match up.