There are a few things that I don't understand about the highlighted text in the image below. The biggest question I have is what でいう is doing after 人間 (is it some sort of construction or are they acting as two completely seperate words?) and what で is doing after 程度. Also at the end where it says 「という元気なキャラクターだ。」who is that referring to?
I also found this page which describes ～で言うところの but I'm not sure if that's related.