XIn Zhao: How does Bonus Critical Dmg from runes & Infinity Edge interact with W?

I cannot tell whether or not Bonus Critical Strike damage amplifies Xin's guaranteed crit from W. I know that it interacts normally other bizarre critical strike mechanics (Fiora E, Jhin R, etc), but when I equipped bonus crit dmg runes & infinity edge, the tooltip in-game did not say that his guaranteed crit dmg was amplified by 58% of 75%. Now, does this mean that bonus crit dmg intentionally does not amplify his W crit, or, is the tooltip just not giving out the information that his W crit was being amplified.

Does anyone know the answer to this? Please & thank you.