CO needs to fold PF, since he's clearly against AA and not in as good a shape as he thinks he is.
http://twodimes.net/h/?z=41723
pokenum -h ac as - 7c 7d
Holdem Hi: 1712304 enumerated boards
cards win %win lose %lose tie %tie EV
As Ac 1375194 80.31 331347 19.35 5763 0.34 0.805
7c 7d 331347 19.35 1375194 80.31 5763 0.34 0.195