Well see, that would seem to assume that Ed is actually trying to do what those guys do which is a closer to photo-real version of it which Ed doesn't do nor does he make any pretentions at doing. As Ed himself has often said "./he's a larger than life character so that's how I draw him". Ed is a cartoonist.
That also fits in with one of his biggest influences which is an artist named Bengis who did design work for Capcom on various games, only I find Eds stuff more balanced and reigned in.
But, he's suppose to be Superman, Superman has a set body type. Curt Swan, Neal Adams, even John what's his face drew him with this body type. To draw him like the Hulk is just as inane as drawing Bugs Bunny with Hulk Muscles. Every artist who draws comics is a cartoonist, that's what cartoonist means.
Capcom always had great artists working for them, all better than Ed, IMHO.