Certainly looks that way doesn’t it? The similarities are greater at slower speeds when Joe isn’t using forearm. Then the motions looks more finger-oriented, and more like what Martin does. When Joe goes fast on a single string there’s more forearm, like this for example:
Also, around 40 seconds in the outro solo you’ll see this type of motion pop up again. And the arm component to this is obvious.
Obviously the biggest difference is that Joe is a USX player. Whether you use his blend of forearm and fingers or not, at the end of the day, he’s making a picking motion where the upstroke escapes and the downstroke is trapped. For people who want to play these lines, there are other ways to get that, like wrist, or forearm-wrist, and those ways work pretty well if you can’t figure out what Joe is doing.
I’d also point out that when you ask Martin to do his finger motion fast on a single note, it’s not a double escape motion. It’s a downstroke escape motion. Like this:
The pick is only escaping on the downstroke here. I think when he does the arpeggio stuff the motion is slightly different, and maybe involves a small amount of forearm or perhaps wrist to escape on the upstroke, in addition to the fingers thing.
So if Joe’s finger motion is upstroke escape, and Martin’s is downstroke escape, does that mean they are different motions? Or is it the same / similar motion being done from a different arm position?