There's this town with two blacksmiths - one, a swordsmaker and the other, a shield maker. The swordsmaker's swords can slice through anything as a rule and the other guy's shields cannot be destroyed. Now they get cut up with each other for some reason and pit their wares against each other. What do you expect happens?
when looked at, the problem might not contain enough information to say who wins. skill at using your object is also very important. this problem, with the amount of information it currently has, is unsolvable. it does make a good plot for writing a story though... imagine the possibilities...