Which guy are we talking about? Muddarfunkarz could have been really, really bad at Rush or helping friends to cheat.
But the amount of Time he has in the Apache and Havoc is so huge that it has to come from conquest. The only apache in Rush is Port Valdez at the 3rd point.
He only has 37 Rush win pins and 360 Conquest win pins. He also has a huge amount of vehicle kills, AIR kill pins and kill assists.
As the more advanced history stats come out, I bet he will be playing the same map over and over and over.