Surely this is where the 3rd faction comes into play. If you waste enough of your available force trying to camp the smallest faction out of the game, you'll just lose everything on your front line with the 3rd lot.
Likewise, if you could/did drive both factions back to stronghold - your team would only be able to camp them both with 1000 players, whereas each of their teams would be able to break out with 2000 players....
The winning team would take a pop hit too, because some players will switch conts to find a proper battle, we're not all into spawn camping
