As far as I know, no single champ can completely zone out Kayle and force her to lose the lane. Although, of course, there are champs that are annoying to her (Yorick, Kennen if he's good, any champ with silence). But zone her out? No.
Although I don't have experience in ranked gameplay, I have the impression that she isn't banned very much. Someone here, I'm sure, will correct me if I'm wrong.
I think Dyrus demonstrated her viability top lane at the latest MLG. She's a good top laner and scales well late game if built as an AD carry. She's also tough to gank once she gets her ulti.