You are dodging the question. Why is the Catholic churches claim to Apostolic succession more valid than the Morman's?
Um... because Jesus actually told Peter to be the shepherd of His flock? I guess it comes down to which history you believe. People make choices in life. Do I believe a lesson in history coming from Tertullian, or do I believe a lesson in history coming from Dan Brown? Was Jesus the Messiah or not? You look at the evidence and make a choice. The evidence of history indicates that the Catholic Church has a continuous, traceable line of succession going back to Pentecost Sunday. Do you believe uncountable sums of documented history of this fact, or do you just sort of see what you feel like in the morning? It's up to you.
Whether or not you like, dislike, approve of, or disapprove of the Catholic Church is nothing but a gnat on my windshield. It's irrelevant to Truth. But if you're going to hijack a thread and deliberately lambast the Catholic Church through your litany of errors, I'm going to stand in your way. If you want to have a serious discussion on theology, church history, and Christian brotherhood, then I'll be glad to engage, but if you're only here to be a destructive element, then you'll get it back in spades...