What folks are trying to point out is that angry outbursts, a nasty mouth and skimpy costumes are not what usually passes for characterization (at least before the New 52 came along). They are what poor writers try to substitute in its place.
As I've stated before, Giffen can write some good, sometimes even powerful and touching stories. But when his ego starts revving up, you sometimes get self-gratifying stuff only he seems to think is wonderous. The early issues of his funny Justice League were actually pretty good satire, but the more attention he got for it, the more it became self-parody, losing its edge and funniness in the process. Same with his early Ambush Bug stuff; there was very funny and very imaginative stuff in the early stories, but then, again, it went quickly south into ridiculousness. He's good if he's reigned in a bit by a good editor, and you can get some really good stuff. THat definitely ISN'T happening with MOTU; this is fast becoming the worst kind of Giffen's work. The first issue was a mixed bag with some potential, but that's quickly vanishing.