Yeah but it wasn’t even that. I think the match is basically even or slightly in yangs favor as of 1.04 due to the EX CU strike invincibility change (the projectile iframes loss hurts vs meaty palms but Yang can’t setup a meaty palm that beats BOTH EX CU and EX Zonk unlike Yun who can do it but only has a 2F window). It’s not just the damage stuff, watch how he plays the neutral. Use of rocks is important even if you can’t use them often in the match they can help. Keeping yang out of his crLK range via block strings / frame traps puts Cody at a range where his pokes are superior. Yang’s options at mid range in terms of normals aren’t as good as Cody’s. Close range Yang is probably better but at mid range Cody’s crLP/crLK/crMP/farLP do a lot to stop Yang’s approaches.
Challenging Yang’s pressure post LP Slash by using crLP/crLK is something Cody needs to do in the mu and Gucci did it consistently.
The most important thing is of course max damage punishes, good defense, and use of OSes but solid neutral game is important if you want consistent results. Hoping for a mistake which you can maximize is not going to net you consistent results vs the best players. That is actually why Cody loses a lot of his MUs, because while he can do a good amount of damage/stun on a punish he basically has to rely on either a big gamble that is generally high risk and pretty easy to fight all of his gamble options with the same things (stand throw or neutral jump or forward jump will beat almost everything) or he has to rely on the opponent screwing up somewhere such as a bad read or input error for him to win.