I wish it was easier to get a guy kicked. I was on a 64 player server, and a guy was spawn-tking. Not only that, when aircraft appeared he'd quickly C4 them. In the 64 player game, 42 people needed to vote kick him. We were consistently getting about 15-22. One side didn't really care, and the side being TKed had plenty of people not even realizing what was happening (I mean, the demo had been out all of two hours then.)
If you get the majority, or even a third, of your own team voting to kick you, you should be gone. The other team shouldn't matter.