Where have you been reading that? Just curious.
I have never heard anything saying kicker is superior to JL in anything.
Kicker is not bad by anymeans, but it is not JL quality. If you can find a shop that has both on a sound board in an audio room then definitely listen to the same subs or speakers on both amps (I know the chances of that happening are slim). What is the price difference on those? Both are good amps, it's not like you are trying to decide between JL and Sony or anything...lol.