You can't test throw invulnerability off of knockdown. Literally everyone always has frames 1 and 2 of their wakeup throw invulnerable. You have to test off a tick grab or something.That's the confusing part. The tests I did before pretty much confirm it was always frame 1 throw invincible: https://www.youtube.com/watch?v=2RsbRxijqAA
So, really, I have no idea what these changes actually are.