Tommy has a larger repertoire, but Doyle has better hair.
If anyone wants to try to play this song, here is the tab.
Note: Tommy’s guitar is tuned down 1 1/2 steps and the tab starts at the top of page 2. Ignore all the stuff on page 1.
I use 11-47 silk and steel strings, and I don’t think they will go that low without significant buzzing. I think you need medium gauge strings to pull it off. Or you can just tune it regularly, but I think you will lose a lot of the haunting melody.
I’ve seen a few covers of this song, but nobody even comes close to Tommy’s. Good luck.
https://tommyemmanuel.files.wordpress.com/2007/09/tommy-emmanuel-questions.pdf