Looked at the video and see i had a few differences . I started the level using the same gameplay as in video but was struggling with the reverse/MAT move when i realised there was no need for it if a SSS was used instead of a SBS.
@Lolita - Looks like you speed up your video as the game play was a little long. I didn't like the move at 5 seconds as it wasn't stable on my device. I would get the good tap on the stairs but B wouldn't go, landed and stayed on the other side of the wedge. Finally got it and it was worse the next time with no success after more than 20 attempts. Seeing that I needed to do it yet again - I gave up.
... weird middle air tap at first. tap behind wedge in order be able to tap higher sandblock. B's body stick with R then hard to release them is annoying.