Jim, your man goes on to claim that "It's almost certainly not the case that Christians are the most "persecuted" religious group in proportion to their numbers."

He is agreeing that it is the most persecuted, but only because it is the biggest.

Shite!!
There is no religious persecution in Europe or USA where most Christians are.
Christianity is very far from the biggest religion in the places where persecution happens, so proportionally they actually suffer very much MORE than other religions.