Are you doing this in the corner Hanzero? Backdashing is not an option.
Also, what armor moves are you doing that can punish 112? I thought armor had 8 frames of startup before it was active...Lex can't corpse charge between 11 and 2. Superman can punish it tho. There is a gap, I would just say it's around 4f or so.
What I meant was using the invulnerable frames on any backdash to avoid being hit, which would work even when cornered. This works best if you read the U3, it comes out kind of slow and you can dash as soon as you would get hit and the U3 whiffs. Also the gap is bigger when a jab whiffs. The second 1 in the 1,1,2 string will eventually start to whiff when you loop the block strings. If this happens the opponent CAN meterburn a b3/f3 in the gap. They can also backdash the 2 or poke out.
Poking out is the easiest, most practical way to escape this. The only way to avoid whiffing an attack during the 1,1,2 is to step forward a little bit, wasting frames. You can basically sit there in block mashing a poke. As soon as NW whiffs(or is a little slow), the poke will land and end your pressure. If NW wants to walk forward after an U3 to make sure the full 1,1,2 string lands, you still get poked.
This is not to say any of these options are easy to use and escape. Poking out still takes some timing and the other options have to be on point. I still think this tech is good, just not an infinite because there are options.
Think of the other options rather than looping, we know it can't be looped infinitely. We can loop it once or twice raw, but the real value comes from any other mixup.
Edit: After testing this, my stance is that it's not an infinite. You all can check for yourselves. Can we change the thread title before people start bitching for nerfs? How about we bandwagon for a better record and replay practice function instead? Testing this was a real pain.
