Re:
+ C. Yeah, this move is actually a great gtfo the corner option. Why? Because it's a very practica command input for the "super AB roll". To do the super AB roll you have to run forward and roll while running. Of course, when you're getting cornerfucked this motion is near impossible to input. However, you can input a wakeup
+ C right after your guardstun ends and/or while you're waking up from a corner trap and you'll probably have better success getting out of it because of its increased length of invincibility.
And I treat Shingo's std C ->
+ K much like Kyo's B&B std C -> 75 Shiki Kai. Do it when you HAVE to do it as a clutch for a combo opportunity. The input is easy and it's near impossible to miss it. i.e. if an opponent whiffs an uppercut and you don't know anything better to do, this is your standard B&B. It's still possible to eff up a std C -> f + B ->
+ C if you're twitchy like I am... nothing's more annoying than std C -> f + B -> owtfhitmeplz
+ C.