Are The Teeth In These Bud Ads Photoshopped?

Brent noticed this Bud ad at a sports bar and noticed a similarity between the three sets of chompers. Either the men go to the same orthodontist or there was some photo-altering funny business going on.

Are there any experts out there who can give us their informed opinions? We’ll also take uninformed rants from rage-filled armchair Mad Men. Whatever you’ve got.