Just at a glance, The Congo is about 50% Catholic with the rest being native and Protestant religions.
Rwanda (bloody Rwanda) is majority Catholic,
Zimbabwe has religions that try to mix native belief and traditional Christianity as the majority.
Malawi has Catholics and Presbyterians as the majority religion. Malawi also has a history or religious persecution.
Anyway, that's enough to show whoever made that list doesn’t know what they're talking about.
(Some of the information came from CIA Factbook on each country.)