Here is a set of punishes that incorporate FADC & Heavy Thunder knuckle as primary moves to counter many common attacks. These are very practical in match and I have on countless occasions used many of these counters. It is not hard. You just need to recognize the situation.
There is also a montage of disabling enemy projectiles. I quite possibly made 100 different videos just disabling every characters projectiles. C. Viper can cancel up to about 95-99% of the games projectiles. The technique is practical in actual play, but only reliable on slower projectiles similar to the speed of Dante's air guitar or Morrigan's Fireballs.