I sometimes wonder, just how strong is that resemblance, I guess it's in the ears...
As I’ve noted before....that guy on the left , Stanley Armour Dunham, dollars to donuts, is his REAL father...not his alleged grandfather. His mother WILL turn out to be a Kenyan girlfriend of Stanley.
Hairline is pretty much the same too. Nose is similar, although with BHO's nose in the air like that it doesn't appear as much so as in other photos, especially when the "grampa" photo is of a bit older SAD. Same with the chin/jaw, which is also similar, but made to appear less so by the Il Duce pose of BO.
Look at the bonme structure above the eyes and the cheek bones...what a coinky-dink....