Hmmm..I don't think you can compere either one against the other, their style of music is quite different and Lindsey appears to have many more strings to his bow as you have already suggested.The one thing I do find interesting, is the difference in technique with the actual fingers. Mark almost appears arthritic, whereas Lindseys fingers are much more open and fascinating to watch with that "how does he do that " look about them! Either way, the music is what counts and it's pretty good from both but hardly comparable.
(my loyalities lie with the latter though!!!)