Along with Country Girl's replies, I'd say that it's not any other person's place to "judge" the status of the pope's eternal existence. I believe it's based on a personal relationship with God, the Father, through acceptance of the sacrifice of His Son. There are many denominations, and many differences are based, IMO, on doctrines that vary mainly in areas that don't affect salvation, though that doesn't equate to me saying those doctrinal differences aren't important.
As an example, I don't personally feel that a person believing purgatory is a real place would affect whether they are/can be born again or not. Worshipping Mary or various saints would be a problem, I feel sure, but I don't know that they actually are worshipped or just heavily honored (though more than they should be, IMO). Also, if I undestand correctly that Catholics teach praying "through" or in the name of certain saints or Mary, that seems to be highly against only praying in Jesus' name; even so, I'm not sure this would necessarily affect salvation as long as the person accepted Jesus as his/her Lord and understand that salvation can only come through acceptance of His sacrifice and not of various saints or Mary.
Just as with the Catholics, I feel it's not my place to judge whether a JW, protestant, etc. is saved but feel it's all between the people themselves and God. That isn't to say I might not have an opinion in certain cases, such as with Hitler, for example...