What troubled ME about Bakula was that he couldn't find ANY balance at all, no matter what emotion he had to convey. He really appeared as if he wasn't completely in it at times. He often overacted, almost as if he forgot that he wasn't on stage but on a tv show set.As a Enterprise-induced Bakula fan, I have to admit, that lack of control also bothered me in his performance. Instead of being really angry, but only showing a smidge of it with the feeling he was really angry, I thought he overdid anger. I imagine it's hard as an actor to strike the right balance.
I just caught "Exile" the other day (S3 is just airing on Croatian HRT), a Hoshi-centered episode in which Archer isn't a very prominent character (compared to other episodes), and Bakula still managed to suck royally. I mean, SB is a good, accomplished actor, but at times, his heart and mind just weren't in it.
As for Connor being over appreciated, well, I can certainly understand how the majority of female ENT fans love him for his looks and charm so much that they don't even care about his performance, but I (a straight dude) really think he's an excellent actor, having seen him play a racist's attorney engaged to a black woman in "Close to home" where he really nailed it.