he screwed up to set an example ofcourse... it's not that he cant make it to 216, or maybe he really can't, but it certainly wasn't to say that he couldn't go over 216. But who cares ? Playing guitar is a musical thing, not a mathematical thing. It's very dumb imho to calculate that stuff because what's the use ? If some one sais: I can play 16th chromatics at 250bpm, that doesn't impress me at all. On the other hand if some one plays something with heart and soul but not quiet as fast i'll give him more credits than the mathematical player.

Ps. this doesn't mean I play without a metronome or something. It's a great tool to help you develop your speed, but I don't think you should exagerate !