Ok this is inquiry, not criticism.
I found the vocal to be very well done.
But for all the complexity I wasn't really drawn to the guitar. It seemed somewhat mechanical?
Best I can place it would be to say they didn't seem to complement each other. So loan me your ears, tell me how you hear it, if you will.":O)
I offer as proof that when the right approach is taken, nature nature will respond to us.
further evidence
I think Rick made the guitar playing mechanical on purpose, because he is trying [both sonically and visually] to demonstrate the high complexity of the chord progressions in that song, and the guitar is a good visual medium, perhaps easier to show than a keyboard. If he were actually performing it for an audience, it wouldn't sound like that.
Here is a video of the original song.