So you discount his entire season of which he only fumbled twice for 1 game where one of the top teams in the country did everything they could to hold him to 100 yards? You're going to "stand on" that?
He fumbled 4 times this season, 5 times last season. Ball security is one of the few consistent knocks on him. And again, I want to re-iterate, he's playing against Mountain West defenses.