A very small size for them is 8 and a half inches like alex smith. Brett Favre though has huge hands at 10 5/8 inches.
Cam hand size is 9 7/8" Hands
Cam is. . .6'6. . you get that right? When you look at his hands with your eyeballs. . do they look big or small?
To me they look small and slender.
Look the stats you posted and translate that, everyone one of those QB's is smaller than Cam, some by a lot, and some still have larger hands (Brees)
Its not a big deal, but its just something that I noticed. Ill bet that his ankles are smaller than usual too for his size, but I havnt compared yet. Smaller ankled runners are typically faster.