I don't know if this is a skill issue or not, but it seems that imp classes perform at a much higher level than their pub counterparts. This is purely anecdotal of course, and I don't have any hard data to back it up.
I got that far, and just decided to leave this reply. I can already assume what the whole post is going to be about, and you're not the first to claim such. At least the others had conviction, even if it was misplaced.
If it's purely anecdotal, then of course the rest of the post is irrelevant.