Hardy's music imo actually isn't that bad. It starts off to slow, but once it gets going it's pretty good. His old theme was pretty much just generic techno so anyone could use it so that's probably why they changed it. His new song really doesn't bother me that much.
Now Kennedy's on the other hand is terrible for him imo. It just does not fit him at all. It sounds like face music and it's way to soft. His old theme was sweet because it was really loud and it like announced that he was coming out, it was perfect heel music. This one isn't a bad song, it just sounds like face music and it's just too soft for his "loud" personality.