That is tru unfortunately when one labels one self as Baptist ,Methodist,church of Christ,or any other denominational titles they are still Christian if baptized in the Trinitarian formula.What a lot of people don’t realize groups such as the Jehovah’s Witness makes them different religion is the theology and type of baptism . For instance "oneness ". or Jesus only " pentacostals would be considered a different religion due to the non vailid form of baptism and tend to teach unorthodox doctrines that differs from historical Christianity . It’s like a Muslim praying before a tabernacle in a Christian church and visa versa.