The winningest drivers in the COT are :
(after 2009 Race 04 @ Atlanta)
Jimmie Johnson has won 12 COT races
Carl Edwards has won 11 COT races
Kyle Busch has won 10 COT races

Jeff Gordon has won 3 COT races

8 drivers have only 2 COT race wins
Greg Biffle
Kasey Kahne
Jeff Burton
Denny Hamlin
Clint Bowyer
Tony Stewart
Matt Kenseth
Kurt Busch

4 drivers have only 1 COT race win
Dale Earnhardt Jr
Ryan Newman
Martin Truex Jr
Juan Montoya

Atlanta's polesitter Mark Martin is winless in the COT so far.
(The question was ask, "could Mark Martin win Atlanta", obviously he didn't.)