Can Obama tell real Christians from those who claim to be?

President Obama is famed for being able to tell real Muslims from fake ones. Fake ones have Muslim names, claim to be Muslim and practice Islam.

The attack on Garissa University in NE Kenya was carried out by men who asked students if they were Christian or Muslim. They let the Muslims - whether real or not, those who claimed to be Muslim - he let them go. They killed the Christians. See also Associated Press.

In President Obama’s statement on this massacre he didn’t mention that the killers were Muslim. And he didn’t mention that the killed were Christians. Can he also tell real Christians from those who claim to be and practice Christianity? See it White House.

Ian Tuttle at National Review Online finds Obama’s logic to be consistent and absurd:

Recognizing the victims in Kenya or Egypt as Christians would require explaining why they were killed, which would draw the White House dangerously close to acknowledging that the “extremism” they so detest may, in fact, be of a particular religious flavor. But — and here is why the Ismailis, &c. appear — how could these extremists be Muslim if they are also killing Muslims!?

It all fits together. It’s all consistent. And it’s all deceitful.