I group them together as the biggest MLM schemes in the world which sounds pretty much correct according to your own numbers They are grouped together by size

I group them together as the biggest MLM schemes in the world which sounds pretty much correct according to your own numbers They are grouped together by size and by the fact they both prey on children as their main recruitment targets Do you think "christanity and islam" should never be together in a sentence just because they differ in some aspects that are irrelevant to this conversation?