The problem with CT is that in modern times, a relatively small percentage of terroists who are christians are doing terrorism which is explicitly or obviously related to the religion (the most notable exception probably being anti-abortion motivated terrorists) (One could argue that groups like the KKK claim religious motivation as well, but are their type of actions considered religious by the RSs? (honest question) .  Conversely, the majority of say islamic terrorists explicitly claim religious reasons for their actions (although other politico-economic issues may be as important if not more important than their ostensible reasoning).   (Or one could say that there is a bias in the reporting/research causing this imbalance, but the result is the same as far as wikipedia is concerned) This certainly does not mean one group is better or worse than the other - but just that reliable sourcing on the specific topic of CT is not nearly as available as other religious terror movements.