Too close. Even 2 pics of Dawkins won't have such identical smile, cheeks, nose, and nasolabial folds. The light reflection on the eyes is also too identical - again, probably not possible to get that on 2 different photos of the same person. Photoshopped.
Dawkins does look like her in that photo. Tho that is a somewhat old pic of him. And even he doesn't look like that any more.
Actually sad to say, I thought he looked kinda bad t last couple times I've seen him. Maybe he has just put on weight. I hope its nothing more serious than that.