FALSE. As usual your numbers just don't add up:
Catholicism - 1.2 billion
Eastern and Oriental Orthodoxy - 310 million
Protestantism - 670 million
Anglicanism - 82 million
Nontrinitarianism - 27.5 million
Latter Day Saint movement (Mormonism) - 14.1 million
Jehovah's Witnesses - 7.3 million
Oneness Pentecostalism - 6 million
Y'all's own estimates on FR are that only 20% of self-labeled Roman Catholics are authentically practicing RC's.
I don't know if Gamecock or Alex have those posts archived, or not.
In any case, we've seen plenty of posts on FR from RC's themselves--AS WELL AS survey research--DOCUMENTING that it's really the often proferred stats of RC's themselves on FR that don't add up.