I feel his rhythm defines his style of playing more than his choice of notes,because his choice of notes are somewhat ordinary..
but anyhoo..
He plays his pentatonics fast and his minor scale slow.
For minor scale i notice he tends to avoid using a certain note, for instance in A minor scale, he avoids using F, for e minor he avoids C, and so on
he also use alot of half bends, 1 1/2 bends (for instance 12b15),alot of staccato bends,repetitive licks and inverted chords
the best way to learn is to watch him play live on youtube