Tira's A+B is good for JS 6BK combo, GS 3AA+B combos, & CE combos depending.
Bit confused as to what you mean.
You can only combo with tiras js 6bk from A+B if you get the lethal hit, and even then the Dmg isn't great and there is no chance of mood change.
It is good using that to combo for a ring out though, the wall splat from it is Meh and its hit and miss whether you can hit them with 4k from that wall splat too.
CE from LH GS or JS A+B is great I agree.
And LH GS A+B you can't hit with 3AA+B from so I imagine you mean for a MU it's good if they block GS A+B?
Even if you mean from blocked A+B id have to disagree on the moves you mentioned as a mix up, JS 6bk can be punished and you can duck under the K, but used sparingly it can be good yeah.
Unfortunately it has to be CH for the K to be guaranteed though and the whole thing can be stepped.
Like vodka said, make it combo on NH and it would be much better, would be sometimes worth the risk using it then.
Using GS 3AA+B after A+B nets you a lot of Dmg if it works but you can change back to jolly for no extra Dmg if it doesn't work, plus the last few hits can be ducked and its even unsafe if they don't duck it too.
Got to admit sometimes I've been yoloing it in such situations just because it gets you so much Dmg and scares them into not stepping a bit too but every time I use it I'm praying to soul edge I don't get punished hard for it and it hits so I'm not back to jolly for nothing, probs shouldn't use it at all tbh.
You should be able to hit confirm it easier, I can't do it all, don't know if other people can?
Same with tiras other moves, you used to be able to delay to hit confirm like JS 6ab and 3ab can anyone hit confirm them. I'm wondering if I'm too slow?
Was easier before though I know that much, can't seem to delay the 2nd hits much or at all.