Which level 7 creature is the best, and why?

You have problems with arithmetic. :) This isn't directed at me...
However, if you want, create a map in the editor and see how I did it. And I'm sure that after that, you'll retract your words.

Those are two fingers pointing at asphalt.
We look at the wondrous miracle, marveling at the wondrous wonder:

We scratch our heads, open our arithmetic textbook: yeeeeeessss, so much new information! It turns out that if you calculate 80% with an abacus with zero hero defense and 80% with 50 defense, you get such different numbers...

Don't forget to apologize, by the way.