For me, as a once moderately serious mountain biker, the riding bits are dull, don't show a rider even getting close to the edge and pulling an un-controlled wheelie each time he rides past the camera makes him look amateurish.
The camera work is great in terms of image quality, and it may be what the client wanted, but it doesn't express excitement, pain, fear, exhilaration. The thing I'd want to see would be getting in close, stones and dirt flying as he went past on difficult terrain. Sure it's contemplative, but this isn't an office job.
Sorry not to be more positive.