Ken’s step kick isn’t the problem, nor is Ken himself. His slower walkspeed and his reliance on step kick to get anything going against Yun makes his game play that much predictable which is why many Ken players try to do something they rarely do: zone. They know that if they go head first against Yun his dive kick and neutral jump will beat them out. I feel Ken’s not the problem here.
If you vsed any high-level Ryus you’ll know what i’m talking about. Heck, even Air said this match up was in Ryu’s favor in vanilla AE, and now with this patch, the match-up got worse as Ryu’s fireball game got that much stronger as well as his anti-air/get off me move in his fierce dp, all the while Yun lost damage, set up, and anti-fireball techniques…
I can make a series of good reads and have Ryu almost dead but 1 reversal-counter hit fierce dp and a dp fadc into ultra evens it up just like that, not to mention you’re GOING TO take damage trying to get in. Yun just cannot win in a dirty, messy slug-fest anymore against Ryu. Also, the delayed mk dk only works if they do the dp motion correctly by starting standing up first, but if they just mash crouching 3-2-3-2 it will auto correct and hit the mk dk. The only way to 100% make it whiff is the lk dk.
I agree with you though, that the match-up are winnable to the degree being almost even (5.5-4.5 like i said), but it takes more smart reads and better play from Yun overall against Ryu who can afford to play a bit retarded and risky, whereas we can’t.