Joshua Watson2 said:John Petrucci plays with this mathematical approach, you could say his note choices are pretty predictable.
Vai is the complete opposite of that crew, but he can definitely play with that same level of precision when he wants to, which makes him a much more "flexible" guitarist in my book.
See, it’s funny how you can always find someone online who will just flip your argument back at you—it happens all the time, at least to me.
Personally, I don't doubt for a second that Vai is an innovator. It's the same with Petrucci; you could call him a "jack-of-all-trades" because he pulls from so many different styles, but maybe he hasn't fully mastered any single one of them? That's why I actually dig him... sometimes his tones sound a bit messy to me, rather than "mathematical." Now, people can tell me I'm wrong, but that's just how I hear it. That's my perception. Besides, we're talking about world-class improvisers here, so they're all flexible—some just more than others.
Honestly, it feels pointless to take these hardline stances on things that are purely subjective. To be real, I don't even have the energy to argue about this stuff anymore... it gets exhausting. This guy is better than that guy, this player is faster than that player... blah blah blah.