Hajime:
Although I'm sure your info will be helpful to those who are new or having trouble with the Mitsu matchup.
Can you please indulge me on what in his post specifically would be useful for new players trying to beat stance. b/c I really think this is a huge load of nonsense. but if I'm wrong I'm eager to apologize. Trying to interrupting stance with 2A will result in you get hit a lot, punishing RLC with 2K is an "awesome" solution that sometime wiff, is range dep, deals tiny damage and provide great mixup for opponent on hit, and backdash into interrupt will only work against a few options against opponent who stays still, where most players dash at you in RLC, meaning you risk to get CH with anything, but even worse with RLC K for 80+ dmg on CH.
Now to adress your previous question I totally missed in my previous post.
Yoshi lacks a blanket answer (at least I haven't found one yet...) that deals with all of Mitsu's options from RLC. It would become a ugly game of Yomi. Got any input on that Belial? What's your potential damage versus Yoshi on typical relic situations? Assume 214A, 6K2K, or 3B (1K if you want to be ballsy) punish against a blocked RLC A and 4K{B} against a blocked RLC B.
No character has a blanket answer. Stance might be not so great on paper, but it is in real game. For same reason its impossible to do any theory fighting vs stance. There are few things I am certain of, and I can give you this advice.
1) RLC B is totally, absolutely, ultimately impossible to see on reaction.
2) Never duck vs RLC. even if you guard RLC K with Yoshi you have no way to mix up effectively.
3) If you ducked, and blocked RLC K, then do FC 2B or a throw.
4) Never turtle against stance unless you are 200% sure your opponent is going to throw an unsafe now.
5) Try to be as agressive against RLC as possible, to force your opponent into doing unsafes.
6) Being under pressure makes people predictable. Dont try to outguess your opponent when he is pressuring you in stance. Rather have 1 option prepared, and use it to force an outcome you desire.
7) Learn from OyM.