I just ran a spreadsheet calculation on Andrew Bynum's point production in the month of March compared to Jan-Feb average. It turns out that he is now 7.7 points higher in his points production. I then took each game the Lakers have played and added Bynum's additional point production back into the Lakers point differential in games going to the beginning of the season. It turns out that only his point effect would result in the Lakers having a 35-9 record matching the best team in the league (Bulls). You can argue that in March they have only had 7 games played and the overtime win skews the results somewhat, although since you cannot win a game by 0.7 points, even if you reduce his March production increase to 7 points the results would not differ at all.
Now if you take the positive compounding effect that Bynum's game has on outside shooters like Bryant, Blake, Dfish and Barnes than you can see that their record could even be better than a 35-9. I think a case needs to be made about this effect on potential trade talks.
Taking this newfound effect you will ultimately force Kobe Bryant to have less shot attempts and increase his efficiency, now that other teammates are contributing to their team's cause.
Based on the numbers I ran, Bynum's points production needs to stay in the 22-23 point range for March to not affect the results by much. I certainly can see the negative effect some players on the roster have on the team, starting from starters like Pau Gasol and Derek Fisher (even though I think it would be sad to not have his leadership) to bench players like Darius Morris and Jason Kapono, etc.., we still need trades, although given that in the playoffs the roster will probably only go 8 deep, the effect of Bynum's advantage is realized even more.