Your right, they do. However, you cant take away the fact that before Gasol Kobe was over there bitching and demanding a trade and couldnt get it done ... then, he gets some support and gets another Championship and their team is a contender. Without the $$$$$$ you had nothing.
Kobe is in the West, the West has had better teams/opponents to go up against for like the last 10 years damn near. Hence why he isn't doing it.
Wade has no supporting cast, so even if he has easier opponents for the majority of the season he wont be dishing out all these assists or getting open more as teams can double team him and his teammates arent hitting the shots.
So same thing I just said.
Most teams are weak these days and couldnt stand a chance against teams of the 90s ... those squads were loyal most the time and had more experience, were better weathered and thus had better chemistry and more role players.
There was overall more well rounded competition than there is today day in and day out. There fore, it was a harder feat for MJ than LB in my opinion.