One sign of a losing arguement is name calling...I don't know of anyone who's been posting in this thread who's Mormon, rather we have Evangelicals and some Evangelical Calvinists (as I am myself). Why don't you describe what is wrong with an argument rather then using a pejorative label to dismiss it....
Here is why I made that statement. You said that you could build an air tight case refuting RC doctrine with using the Bible only. But then, the RC would say that this is not the case since they would use extra Biblical traditions and thoughts to defend thier doctrine. Likewise, the LDS would refute your case against LDS teaching. In that way, it sounds LDS. Do you have a problem with that comparison? I am not equating LDS theaching to RC teaching. I am comparing defensive techniques I have seen used.