DHM...I've been thinking almost the opposite. But that is not to say you're wrong!
I think it's dynmic for both of them. I tend to think of Bob (and his big hands) as tending toward big wide chord forms, i.e. D-form.
Whereas Jerry I see do alot of triads & diads (sp), especially leading toward strings 1-4. I was watching him play a "Comes a Time" 9/16/91. A, D, E, Bm staying in a box. I see him use losts of 3 note chords ....like a triad G.
But it does not always apply. The longer I study it, it's more & more like a conversation. Many tunes start the same every time. Lyrics call for simplicity. But as stated earlier in this thread a casual opening to a slower tune, can put Jerry & Bob in a mindset to follow with regard to chording options.
My 2 cents. I will qualify this with the fact that I've only been playing seriously for a few years, and do not have the depth that many here do. I tend to study principle & process, because memorization only works for me if I drive the principle into my head.
"Hi Ho...the Carrion Crow...FoldeRoldeRiddle"