upon further review ... y'all got raped badly by some professionals.
There were 2 sniper experts on the team. They were no-scoping from across the map while the 3rd guy hoarded rocket rounds.
The rocket guy had the back of the map spawn killed to perfection. He'd get on the high crane and the sheer elevation created enough distance for Halo to spawn you right under him.
Also, he was very quick on the rocket to BR combo. His rocket kills weren't clean, but he'd switch so fast and shoot that you'd die almost instantly.