Honestly im so pissed at EA for shipping crap that I dont think I will even buy BF2142, but to be honest I think the success of both games will rely on 2 things…gameplay and modability.
Everyone is gona play a fun game…nuff said, but look at the sucess of games that do well with great mods. Check out the stats on gamespy, but at any given moment, about 280k people are playing games online. Check the stats yourself, about 150k of them are playing games made by 1 company VALVE. Why? because there are tons of mods, maps and they make it easy to map and mod their games.
If ET:QW makes their game mod friendly (UNLIKE BF2) they will win, and have many people buying their game to play ET:QW AND the mods made from it!