Thanks for the feedback guys.
The stun caused by Lightning Kick is 16 frames, but the amount of time before the opponent can react is only around 6-8 frames. I tested this by setting the cpu to do lightning kick > neutral jump, and jumping simultaneously. So yeah lightning kick is only +7.
Regarding jumping, when I was working on that video, I made clips of me doing the lightning kick > throw setup. If its slightly slower, the opponent can't neutral jump out BUT they can jump forwards /backwards to get out, which would imply neutral jumps are slower than the other two.