I realized what the discussion was about. Away from Coors Field East, he's an average hitter. This is no different than pointing out Matt Holliday or Todd Helton's home/away split differentials given what a HUGE boost his numbers get hitting at home.
Besides, even with his all around numbers, Youkilis has a dramatically better AVG, OBP and OPS. If he was on the Yankees, you'd pick him in a heart beat.