Trait is unimpeded by pushblock stun/animation/recovery. (Although I am not sure if that's true if Sinestro is pushblocked....to the lab)The example was not for use in a match...it was to see how large the window was for unblockable potential.
Basically, Batmans bats wont work I assume due to the time it takes them to reach the opponent. If Supermans super hits, we know the window is 5 frames or larger. IF it doesn't hit we know the window is smaller than 5 frames.
You cannot even test it this way. Even in training mode, you can't keep the meter to attempt that method.