Actually the white Protestants voted 69% GOP, and the white Evangelical denominations, about 79% GOP.
The Catholic denomination isn't a race, it is a church denomination that the democrats have counted on for 150 years, and one which the democrats are importing by the millions.
Do you think the democrat party would be fighting to import many 100s of thousands of Evangelical Christians every year?
Well...anyone can play with numbers.
My guess is that if you could somehow factor out hispanics and nominal Catholics (CINOs) from the Catholic voting base, MR probabably got closer to 70% of the Catholic vote, around the same level he got from white evangelical voters.