This will be a recurring theme here: there is more to making music than how fast you can play. Speed is not the be all, end all of making music. You need to know what to play (notes, chords, phrases), when to play (timing, groove, space), how to play it (voicings, articulation, dynamics, tone), and why it works in that situation. Someone like Booker T. Jones might not be too flashy, but he has a beautiful, distinct sound and plays solos that fit the tune perfectly. "Representing Memphis" is a mini-Master Class in Soul organ playing, but I especially recommend Booker's tasty solo at 1:50.