That doesn't tell the whole story, though:
Tyler Wilson: 948 pass attempts + 110 rushing attempts + 46 sacks = 1,104 total touches
Geno Smith: 1,465 passing attempts + 245 rushing attempts + 78 sacks = 1,788 total touches
684 more total touches for Geno. Scramblers (Geno moves around more than Wilson--- not that he's a "runner") tend to fumble often if they don't protect the ball, but that is correctable for a young QB. Hand size is not.