From looking at the little vid on the website a couple things catch my eye right away.
1. Crappy echo type guitar sound that tries to give the impression he is playing faster than he/she really is. (Clean it up!)
2. He/She doesn't keep her finger behind the neck. Every time the fingers are squeezed the neck moves sideways.
(Remember: Always put your thumb behind the neck!)
3. He/She need to spend a lot of time re-learning left hand fingering techniques. Making your fingers fly around is a big waste of energy.
4. The picking technique used is with the palm firmly planted against the guitar body and moving the whole hand to move the guitar pick.
This appears to be a big waste of energy compared to just moving your fingers via scalpel picking. This technique also keeps you from moving your hand to different positions on the string or neck. Very tight, rigid and limiting. Loose and relaxed is much better.

Overall, it looks like many other sites that really only want your bucks. There doesn't seem to be any formal training by the instructor, he just works really hard at a poorly executed technique and has mastered it pretty well. Following in these footsteps will probably lead you into
the same rut he is in and will limit your ability to play different things.
But, if you think he is the greatest shredder of all times and you want to shred exactly like him/her, have fun. Otherwise, open your eyes and see what PB teaches you for free.