they both look pretty beautiful imo but they do have a few differences right?
biggest thing looks like the gretsch has a tom while a mustang is string through floating?
and then think mustang is normally s/s while it looks like the gretsch is h/h pickups-wise
but fender makes a bunch of pickup configs so idk what sort you'd be looking at
I think the mustang would probably be a lot more comfy shapewise, and probably easier to string/tune/etc thanks to the bridge