galactiboy
OT Preferist
Well considering the Avatars are created with human DNA then there would have been some differences. Look at Jack Sully...he has human hands (four fingers and a thumb) while the native Navi have 3 longer fingers and a longer thumb. So, it would make sense that the engineered Avatars will have some physical differences between Pandora's actual inhabitants. At least that's what my guess would be.
That was my guess as well... certain traits and features would carry over. Like shape of nose, and in this case the number of fingers an toes.
Not sure if it was done to help differentiate between who was who, or if they had a logical reason... but it didn't bother me.