Ok so I have a huge gripe with a situation involving Power Girl. Ok it has been established that she is the cousin Of Kal-L, or Earth-2 Superman. It also has been established that she is affected by Kryptonite correct? Well how is it that she can be afffected by Kryptonite but Earth-2 Superman was not affected at all, and in fact nearly scoffed at the stuff when Batman tried to use it on him in Infinite Crisis #3?