His anatomy is fine. There's a difference between stylistic inaccuracy and a lack of knowledge. SR7's characters look the way they do because that's how he chooses to draw them, not because he doesn't know how spines, bones, and organs work.
Jesus H, don't make me defend him.
Also, he's invoking Bruce Timm's artwork, although SR7's gals are generally a lot more busty. One of the things that draws people to SU is the fact that it is homaging the WB/DC animated characters from the shows.
Even if Bruce Timm often draws gals with smaller breasts...
He's been doing this for a long time now, though, so I have to wonder how much burnout is creeping in at this point. It'd help if SR7 was working with a less buggy game engine that wasn't as much of a pain to work with, as opposed to the messy build he has now, but that ship has sailed.
I still enjoy the game, but at this point I recommend that people maybe just download it every three updates or so since the amount of new content each update isn't all that much in the grand scheme of things.