What I don't like here is the assumption that your move was innately faster. Xavier attacked a second time the instant Auz was wounded by his first blade. There was no delay in attacks and he was barely awaiting an outcome. The feint was Xavier leaving his left arm limply at his side, simply implying that you had rendered it useless. Xavier did not want you getting close, just assuming that you could. When the first blade hit, the second began its strike. Only a foot of incredible acceleration before the momentum was thrown forward. At the most, you could say they moved in unison. Which in my mind they were. Saying you just moved faster doesn't really cut it. I would like you to bare in mind that in Xaviers CS I have specified Acceleration is his most preferred means of increased speeds. So it's even possible he was capable of moving the blade at the perfect speed to catch you midstep. I chose those exact words for a moment like this, when it could come down to who can get going faster.

I don't mind your sword blow in the least, I feel confident in Xaviers ability to tank the majority of the blow.