I have a hard time seeing how you could argue LMA should get in over Lee. As far as the numbers, less than 1 ppg separates their scoring average, Lee does so on a significantly higher FG%, and is decidedly the better rebounder and assist man. Aldridge has a clear edge in bpg and is the better defender, but the difference isn't enough to top Lee's other advantages, especially now that Lee is on a pretty solid defensive team. Just on pure numbers, I think Lee still has the slight edge.
Then you factor in that Portland is 1 game under .500 and GS is 10 games over .500. Team success is a big deal in all-star recognition.
And just in case thats not enough for you guys, how about this tried and true PDX board argument-ender: Lee has a better PER. Therefore there is no possible way that Aldridge could ever be better. Ever. Click.