Don't start this anti-EA thing here..
As far as I remember from some interview it's so because the Nod endings have always been so "final". It would've been difficult to continue the story for example, from the TS Nod ending.
QUOTE
See I've been thinking, if those terrorists in reallife can severly hinder the US army in the middle east, and they've got nothing,
Wouldn't Nod own everyone 'cause they're really high tech and organized?
Although the "terrorists" have been fighting for a long time their casualties are much higher than the US' .. at least it was so when I checked last time.