maybe you watched it somewhere hokey...I'm pretty sure we didn't watch this movie at the same time or the same place... My lasting memory of the movie was how the last section was ruined by how laughably sped up the footage was. This wasn't a case of good angles that capture speed or transitioning from slow to normal speed. Obviously we didn't see the same section the same way, so it's possible the projection screen and angle I was watching it from made it appear different. I certainly know what I saw though, otherwise I wouldn't have posted it...
i have watched in my computer a few times and still can't see where it would look sped up... looks like two of the best/fastest riders in the world tearing down a pretty steep and open trail.
some of the heli shots look a bit odd because of the amount of fast movement if the foreground, but focusing on the riders you can tell it is all legit.
good angles, good editing, good trail, and good riders