If the rest of the losing team are just mindless sheeps, that ress up on a farmed graveyard just to be slain again, then yeah, they will definitely lose. But if there is at least few ppl that know what to do and they sneak to capture some bases, the winning team needs to split to get them back, giving a chance to the losing team to push them away.
So no, I still don't think a mindless deathmatch would be a good idea. It would be a pointless, one-sided farm fiesta.

