Dave Mustaine (Metallica, Megadeth) once said that David could do more with one note, than any other guitarist could do with an entire fretboard. I always thought that was a kick-ass compliment, especially since a lot of heavy metal guitarists, like Mr. Mustaine, are quite known for running their fingers up and down the fretboard like the damn thing is on fire. It also shows that even guitarists in other genres can recognize and appreciate the genius that David brings to his craft.
I could watch him play for hours, and when I was fortunate enough to see him in Chicago back in 2006, I stared at his guitar more than anything else.
Well, if you believe in such a thing, you'll see Rick one day. One thing I remember most about the concert I saw, was when David did band introductions, Rick got the loudest, longest applause out of any of them. He looked genuinely surprised by it, too. Like he couldn't understand why the crowd was so excited to see him, when it was David's show.
I don't believe in such a thing. I have different beliefs. I honestly think Rick is an amazing musician. Even though I don't believe in ranking artists, I'd class him at the same level as David's if not higher.