I haven't tried it against Randoms, but it does remind me of me playing 4 people at school at quake. At school, I was one of the people in charge of the computer department. We'd often set up a game clearly labelled as ours, and play on it for a bit. One lunch, everyone left the game, but just as I was about to go, 4 people jumped onto the game. Cue a 122-0 thrashing for them. Even when all 4 decided to gang up on me. Across the room, I'd hear cries of "Quick, it's the blue guy, kill him..... NOOOOOOOOoooooooo". (I was wearing quite obvious blue armour, and they were in the rather nondescript default armour.) I felt really very smug indeed. The lowest they ever got my health was 55.
They didn't appreciate my argument afterwards that if you're going to join a game, you really shouldn't join the one clearly labelled as having probably the best people in the school.