Just been looking at the #1 player on PC - Guy has a score of 71.3M. The guy in 2nd place has 63.4M.
I had a look at his playing time and worked it out as a per day average. He averages over 7 hours a day. So if he missed a day, oh I dunno, say his birthday or Christmas day he would then have to do a 14 hour stint to make up the lost time. What's even more jaw-dropping is that he is only 5th on the "Time Played" league. The guy in top spot is averaging over 9 hours a day. 9 hours a day, every single day, for the last six months. Is that even possible? I'm thinking maybe a join account? Some sort idling stat-padding or perhaps even a gaming cafe type place account?
I don't doubt that some of the top guys are just ordinary accounts though. I remember talking to a guy who at the time was #1 in the BF2 charts. He did seasonal work and so basically all he did during the winter months was play BF2. All day every day.