Interesting logic. It seems to me that you are making futile attempts to maintain your hypothetical theory that Yu-Na should not do edge jumps better than Mao because she is not much talented in edge jumps.
If you want to argue that Yu-Na's salchow is not good because she messed it up twice, apply the same statistics to Mao's salchow and also to Yu-Na's other jumps such as Lutz which she failed quite a few times. The very statistics you mentioned proves that your hypothetical theory is wrong.
It would be helpful if you (and others) did not put words in my mouth.
I never said Yu-Na's 3Sal wasn't good. I said it wasn't as strong as her toepick jumps and that Mao has performed the 3Sal just as well as Yu-Na in competition and that Mao would consistently perform it if there was incentive to do so.