Luckily I never read the comics, so I have no baggage going into the show.
I've never read the comics in question either, so my criticisms have nothing to do with "baggage." They just cast a truly awful actor in the role of Corrigan, and I would've found him just as dreadful if he were playing an original character.
You didn't seem to complain about him on Atlantis. I had no problems hearing him and he did seem to hide his Irish accent.