What part of the things you just described doesn't make him a xtian? See, troll and xtian are not mutually exclusive and without a metric against which to measure him and his proselytising, we have to go with what he chooses to share here. So far all the evidence points to his being a xtian and likely a true one at that.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'