The acting wasn't stellar, but I think a lot of the writing was poor too.
Jameson was not a sympathetic character; sure he's getting old and is confined to a wheelchair, something we'd all like to avoid. But when all is said and done, you just consider him an ass who is putting people in danger.
Pataki's Karnas suffers the same fate. He spends 99% of the episode grandstanding like a Batman villain and then once his long time enemy is dead in front of him, suddenly all of his hate about the death of his father is forgotten and he releases all the hostages, without any repercussions I may add. AND he allows Jameson to be buried on his planet? I thought they hated each other.