Call me crass if you will, but what I'm getting from this the OP that if you know you and your friends are good, and you decide to play together and have fun against people you've never met... You're cheating? If you can lock an area (Kind of a big deal in NS2 as well) effectively, you have to stop?
You realize that there's a disconnect button, right? You can do that, and get paired with someone else. Halo 4 isn't exactly dead, what's that term again? There's plenty of fish in the sea?
I'm just sayin', this sounds a little ludicrous. I'm not exactly amazing, but if I get whupped time and time again by someone who's vastly superior, I try to observe how they're doing it... I guess I'm like the OP's friend, while my friend is the OP, someone who'd rather find a set of evenly matched players.