Well, I'll disrespectfully disagree with that too SD, I often feel as if Wes is reaching into a trick bag, especially on ballads, and I don't as often feel that way about Grant, though yes he did cut and paste notes and riffs etc. . . . Again I'm not saying Wes is all technique, no soul, but technnique is a larger part of his whole musical identity, and something I think he loved, and gave structure to his expression,and being "soulful" in the sense of emotional expressiveness I see as a large part of Grant's musical character.
There is something BEYOND the Blue Note connection that makes Grant a guitar player that people that don't always get excited about guitar players in the jazz world get excited about. I'm not entirely sure of why, but for me it's got a lot to do with the ways he is different from many other jazz players. And in my own experience playing music I got so irritated with busy "verbose" guitarists; Grant is like a fresh breath of air in that way, and I love the way that he set up grooves with repetitive riffs and building phrases, which is firmly in the tradition of soul guitarists of all sorts of styles . . . . It's no contest for me: his playing speaks to me in a satisfying clear voice. I have similar tastes in pianist such as Tom Jobim to Oscar Peterson, or Wynton Kelly to Art Tatum. I can think all four are masterful musicians, but reach for one over the ohter many many times.