OVERBOOKED. WE'RE OVERBOOKED (for this week, we'll see on later editions)
You're going to have to elaborate on this.
2C is a grab. Blocking doesn't work. Do you mean that you use 2B as a launcher and then you press J.C and use the fact that they block it to air dash and use J.A and J.B?
If so I'd advice against this. There are characters with good anti-airs that can screw up this weird tactic. I'd have to see it for myself before saying more though.