A RDM using a Kraken Club on a mob doesn't magically make it a god. In fact, it's probably one of the worst weapons you'd want to be using if melee soloing a mob of actual difficulty as anything over D1 runs a pretty strong chance in doing at least one damage, thus feeding TP. Even when using something like the Ceremonial Dagger, you'd also need to use other gear with negative STR and ATK to help guarantee you'd hit for 0. Citing an inane NM like Sewer Syrup, which carries some inherent physical damage reduction, also isn't the best place to be starting when trying to justify the garbage that are T2 enspells.