I gotta disagree with the "lack of dynamic contrasts" thing, though. This guy's mature playing is nothing but differing contours, melodiacally, harmonically, rhtymoically, and, yes, dynamically. Hell, in one phrase alone, the dynamics can go from here to here and back in the course of three notes.
What you very rarely (if ever, get is things going up to here. So there is plenty of contrast, just not on a typical "jazz scale".
Warne was not one for the obvious...thank god!