Totally fake. Think about it. Flying 80 meters or so feet first. The angle of the pool edge would be quite small. It would have to be perfect.
Then you have one meter of water to stop you or you crush into the side feet first jamming into the side and bottom of the pool.
He didnt hit through the wall of the pool? So it is strong.... And he didnt get hurt from hitting a strong pool at 80ish miles per hour?
I think its fake and the flight is real but someone changed what he really landed on to a small pool.
Edit: Actually I watched it a few more times and think the flight is probably fake as well. It seems that there is no deaccelearation in the air, in fact he seems to be accelerating. It seems to me that he flys further than he should with the height of the mountain where he started from and the ramp he jumped off.
Plus if I did this I would be more excited. Hands in the air, hugging your friends, pumping fists, screaming, somehting. He seems kinda bored by the whole thing.