You should do more speed work... if there's anything that jumped right at me in your videos, is the TOTAL lack of speed and quickness. You basically walk to a jumping spot and jump. You look like an old man yet you have a lot of strength in comparison to your displayed power.
So the problem must be in the strength to power transfer.
That didn't look high at all... he just comes down to the ground so quickly... I don't know... it looked really weird to me, like a ~32 inch jump or something, done by a tall guy.