this is awesome tech
@HeroesNZ props are in order for finding this
I just want to mention that this probably turns into a FOUR WAY mix-up. After Ji2 obviously you can go for B2 or MT, or B12 / B1~MT, for an Overhead / Low mix-up. What's probably not so obvious is that Ji3 even at this height is very plus, and you can still go for that exact same mix-up
Here's a video of beating out enemy Firestorm set to Reversal Fusion Charge (fastest non Super Reversal in the game) with F2, a 14f Mid, after B3 (slow the video down on youtube to 25% and you can see him starting the Fusino Charge animation).
B2 will do the same meaning they have to make a read on that 50/50 if they want to poke out.
These numbers mean you are at least +6 but it looks even more to be honest. I meant to record myself doing B2 but accidently did F2, it's whatever tho I cbf to record for a button
EDIT: B2 reset beats reversal's on block, but with the same timing it doesn't convert off Ji3. Feels bad man. I'll try find a mix off Ji3 that works on both hit and block.