While Metal Men may have been a response to Marvel it really doesn't have any of the Marvel conventions of the flawed hero, ongoing character development and continuity. It's just a wacky title. It really isn't that different than Wonder Woman (by the same creative team). I mean wacky titles are fun but there isn't any continuity or character growth. You have some bickering in Metal Men but that's about it.

I enjoy Metal Men but I like Wonder Woman better because it's even more insane. Neither title is uber-serious the SA Marvel is.