I found a weird property with command normals where the first active frame never trades. For example whenever you are +1 after a blocked cr.mp, going into Ken’s b+mp (4 frame startup) would leave a 3 frame gap. Here is where it gets interesting…
As you are aware, 3 frame gaps theoretically trade with 3 frame jabs. If Ken tries to do cr.mp into b+mp, it should always trade with a 3frame jab but it does not. If you replace the b+mp with any other 4 frame move you will trade will the opponent. Whats going on?
if you are +0 on block and try to do the b+mp, you will be counterhit by the opponents 3 frame jab. If you are +2 on block and do b+mp, you will counter hit the 3 frame jab. So why doesnt +1 trade? Ive reviewed the hitboxes and it doesnt look like Kens hurtbox disappears anywhere during the animation to indicate invincibility, nor does his hurtbox warp in any way to “avoid” moves with strange hitboxes configurations. It looks pretty normal to me.
This seems to be the case with ANY command normal. I managed to reproduce the same effects with everyone else who has a command normal and if you manage to line up the frames to make it trade, the command normal always wins.
*Edit: Maybe Ken’s b+mp got ninja buffed to 3 frames? Just tested it and its still 4 frames and doesnt combo after +3 lights. It also doesnt explain why it never trades