In the posted videos, it looks to me the front (green end) is rising faster than the rear (white end).

What you need to look at is the angle of the chassis as it rises after the initial release but before it hits the uptravel limits for the shocks. The first frame or two after the guy releases his finger, you can see the bottom of the chassis is sloped upwards. This tells me his front shocks were stiffer than his rear shocks.