I think they were attempting to imply he was more dangerous than her and more deserving of being on the list. Its probably true, but tactically chosen pictures make the differences between them more extreme, less than a mug shot of her and a wedding photo of him would, as an example.

I am surprised they didn’t find the classic terrorist photo (holding a weapon) they usually seek out for these headlines.

Compared to what I usually see, this is pretty mild.