I think the 6v6 thing is ok. There are bots, plus the titans can act as AI (defend, attack, follow) so 12 people plus 12 titans plus AI bots seems pretty rad.
Plus if the maps aren't huge (vertical combat is a focus) I'm sure it's going to be a hectic mess in a good way.
Plus plus all press are gushing for this game. I don't think the 6v6 ruined it for them.
Plus plus plus this isn't some no name dev. These guys know how to make fps.
As much as I'm not a fan of CoD they knew what they were doing when they made Modern Warfare, so I'm gonna assume these guys will deliver. 6v6 doesn't bother me, I don't have 12 friends anyway.