That's some interesting stuff, Sangoku. Falcon is one of the faster tech rollers if I recall. I'd be curious of how someone like Pikachu fairs, who I believe is somewhat slower.
I'm also wondering how exactly you did your calculation. Once falcon techs, he still has to do a move or run away to avoid the tech chase. Assuming that the falcon does not shield (which is a bad choice), I would think his options are either to jump, upsmash, run, or grab, as I think those are his quickest moves, which will add a few more frames on.
One thing I forgot to mention is that you can increase your rate of tech prediction highly by watching which way your opponent DIs. If you do a few uairs and he is DIing to the right, and then you do a dair, you can almost be sure that he is going to tech to the right. Sometimes its possible to see even during one move if the hitstun is long enough and your opponent DIs well. I think the same input for DI can also register for the tech direction, and I think in some cases it is not possible to switch directions from DI to the tech, but this also needs to be tested/figured out.
Also with shield breaks I think what move you should use depends a lot on the character. If he/she is short, I usually use all dairs, but if its someone tall like DK or Falcon, the last hit almost always has to be a nair in order for it to break. For some reason I find shield breaking with uair a lot harder.
I played ness in almost every tournament match last weekend, along with 2+ hours of ness friendlies. So depending on how much Knitephox uploads there should be a fresh batch of new ness vids.