That is the one thing consistent between all the consoles. The online players really are nasty, foul mouthed, disrespectful people. It seems there is a contest to see who can have the worst mouth online and the winner is never selected, so they keep on getting worse and worse.
I just got spoiled when I was playing online. There was a group of players I played UT with and those were some of the best players around. They were competitive, fun, polite, and respectful. If I could find another group like that one, I would be online everyday.