I havent looked at the links but basically EVERY denomination believes their way is the one true way, or at least that was their principle in the beginning before all the political correctness came on the scene, otherwise they wouldnt even exist. They basically said, your doctrine, or interpretation of it, is wrong and this is what we believe, this is whats right so we are going to start our own church.
The reason people say negative things about the Catholic Church, if I'm not mistaken,and I'm sure someone will correct me if I'm wrong,
is that they pray to saints, which is not biblical or at least *I* cant recall a passage where Jesus or his disciples instructed anyone to pray to anyone other than God or Jesus or in their name or where anyone other than Jesus or the Holy spirit is listed as an intercessor.
(Not speaking of the living saying prayer, like Job did for his sons and daughters). There are also books that arent in the agreed upon canon, which I havent read, tho I think my mom has a copy, and some say the books have spells or endorsement of witchcraft, which is an abomination. They are considered Christian however, and actually the one universally recognized symbols of Christianity, in my opinion. I think thats one of the reasons they have had so many problems, I seriously believe there is a spiritual attack being waged upon them. Millions look to the Catholic church for leadership, if they fall, if faith is lost in one of the major symbols, all kinds of havoc can be caused. Not to dismiss the actions of people in the scandals that have been revealed, but I think church leaders in general are subjected to more spiritual attacks, and insted of them addressing the issues as they arose they swept them under the rug and kept untrustworthy people in leadership positions. But thats a WHOLENOTHERTHREAD.
ETA: As far as folx worshiping the Pope like hes God, that goes on on a smaller scale in almost every church everyday. Its the nature of people to idolize what they can see, thats why when there is a preacher or leader that falls, some folx faith fails because they were caught up in the man/messenger and not the message. The bible warns against this for good reason.