"Haha," you brought up big men having success against us in the past and you're wondering why I would counter with an example?
Gardner had a monster game against us this year and was on his way to having another one. It took one missed shot to shake his confidence. You're seriously questioning what that has to do with McGary, a freshman who is just now starting to get more playing time? You don't think his confidence will have anything to do with how he plays?
He could get going early and that would be trouble. But we could take him out of the game early, rendering him a non-factor.