Explanation in the video. Feel free to ask anything if you need/want.

Yeah many people already use these methods, including myself (depends on good or bad judges beetle if I use it)

Why do you vary the method based on the beetle, Tecate? Do judges make one of the pipe jump options harder/easier?

Yes. With good judges, every pipe jump is 1 frame harder than if there were bad judges, unless you do the strat that LeKukie showed in the video.