Faze is a gaming community... Not a team.
They haven't ever been "pro" anyone can be a part of "faze" create an account on their site then add "faze" to your gamer tag, they mostly only do trick shots and sniper montages... Not really skillful tbh
Go to mlg dot com to learn about real teams.. Also check out the mlg YouTube channel to see what you have been missing.
There are so far only 8 real professional teams in black ops 2 because there has only been 1 real tournament. Mlg Dallas.
Used to play these types of thing all the time from CoD 2 onwards but at present the lag issues are driving the players away unfortunately, i can remember being in a clan and playing in championship games on CoD 3 which i thought was the worst one out of the lot, but anyway i can dream that the next CoD will bring the fun element back into this franchise and then we can get back into these championship games again.