xBananax
Smash Rookie
I don't know how often this situation has arisen with anyone else, but I have found that when I shine up smash someone who is trying to double shine me (from a neutral position) that shine up smash usually wins. The first shines both clank and the second shine and the beginning of the up smash clank, but the latter half of the up smash will hit them. It is a weak hit to be sure, but it does get them off of you and does some of that ever important damage. I believe that if you try to shine aerial a double shine the multishine will beat it out, so give this a try! Also I am unsure whether or not a triple shine would beat the shine usmash...maybe all 3 hits would clank which would be strange and funny to see, but your guess is as good as mine for that one.