Trick question. They are not.
Ok, that's disingenuous. They are Christians. Except, they are nothing like christ.
I know each person will find a different quality of christ that is most like themselves and attribute that as his defining feature but to me christ was radically liberal. Christ saw the hurting in the world and said "I won't submit to it" but gave himself to it freely. In doing so he freed himself. Christ saw the labrythian rules and dogmas of the prevailing religion of his time; saw how it was punishing people and fought to reform. He knew he has just as much authority over God's word as any prophet or religious person and give himself to make the needed changes that would ease the suffering of everyone. It was that and a dash of magic; the world was changed. Slowly but thoroughly.
He was a brown middle eastern liberal. Nothing like the Christians we see today. If there was a christ for today they would reform again and the cycle of religous power struggle would continue.