I can't wait for the inevitable 'autopsy' article on this game, or maybe a VH1 'Behind the Music' style show so we can find out just what the testers for this game were on. I'm betting on ketamine-laced Red Bull.
It's simple.
The game was developed by DICE Sweden (the main team)
As soon as it was launched, it was given over to DICE Canada
So, DICE Canada not only had to deal with fixing the bugs, they had to
completely learn the codebase of how the game works. DICE Sweden, meanwhile, worked on fixing the major issues in the engine for use in BF2142 (load times, server browser, etc).