i have like 9 hours last i checked... after it came out, i was really busy and didn't get to play much online... hopefully will play some more soon though
i think i have played MW2 more this week than i have since it came out... i'm getting readdicted to it. i'm still a level like 38 or something with no prestige
i don't know what the average time it requires is... i remember on COD 4 i was averaging 1 prestige per day (24 hours gameplay) played but i know that there are more levels and the exp points system is slightly different in MW2