Very true he's been bad with the Grizzlies but the point of him still being a great GM still stands. What he did with the Lakers is simply remarkable. Suggesting otherwise is like saying Hakeem wasn't a great player because he sucked as a Raptor.
Actually more often then not Jefferson is mention in the trade talks involving Gasol. I think you value Bynum a little too much, like most Lakers fans. He had a few nice early games, but I can't see him being much more then a 15/8 guy at best, and he'll never really be a defensive presence. Kind of like a Felton Spencer type, He's one of the few guys coming out of highschool that you actually want to lose weight.