Decent, offered much, but the fashion is over.
BF2 wins it, since there's still plenty of servers to choose from and it's a challenge as well as fun.
BF2142 - it's... well... difficult, exploitive, and there's not many servers left that have restrictions to keep the gemaplay fair and balanced. There's more choices in weaponry and some gadgets to keep an interesting challenge.
All in all, though, game was a dbit difficult to get a hold of, no stores have it, even steam doesn't have it, EA Online Store sold it as a downloadable game, but the mistake was pursuing the game in the first place. It should have been left forgotten.
Battlefield 2 is the real deal.