The basic lucky hit chance of Twisting Blades is 33%. With +215% LHC, the LHC of Twisting Blades is 104%. I hit the vulenerable target with Twisting blades 50 times. The ratios of hits by Victimize to the impaling and piercing hits of TBs are 22/50 and 5/50. The expected Victimize hit triggered by one TB should be 1.04(2*104%*0.5=1.04) in theory, but it is around 0.54 indeed. It seems that the basic LHC of each hit of TB should be 33% but that of the total two hits is indeed.
Curving the BladeDancer’s Aspect, things become more confusing. The ratios to the hits of each part of TBs(impaling, piercing and two hits from the aspect) are 13/40, 5/40, 1/40, 7/40. The expected hit is 0.65, far away from that it should be.