dmd3,
actually, probably the opposite. it's not the speed, it's the chord progression.
CRT is very simple to play as well as Pony Man.MWFTL is a bit more jazzy/bluzey and a bit more difficult.
what is difficult is getting the nuances that GL puts into his melodies and rythyms.
GL has a great gift at what is known as 'prosody'. the ability to accent chords in a profound manner. similiar to inflection of speech.
i don't recall any musician able to build chord progressions as well as GL except perhaps paul mccartney. i liken GL to the Mozart of Folk Music!
ambrose