Part of that might have been that Jackson had a better team around him at the time and he was basically the weak link in the chain. This team had far lower expectations(is that really a good thing?) so they are not holding him as much at fault for things. but I do agree there is probably some undercurrent of bias.
A lot of fans on these boards had something against Jackson other than his play on the football field... that much is for sure - interpret that as you will. Ponder has been just as mediocre as Jackson ever was, but he doesn't get nearly as much venom thrown his way. That's just a fact.