Wolf is definitely brighter, probably mostly due to all the maple.
Jerry used Wolf for the entire October '89 tour because he was having Rosebud built with an internal MIDI pickup. He needed something with MIDI for entire shows, not just for "Space" (i.e. "Built To Last", "Mexicali Blues") like everyone else in the band at the time. Due to the carved top/battery cover on Tiger he couldn't easily attach a GK-3 type controller to the top of it, thus reverting back to Wolf with it's flat maple top.
Wolf does not only ring with a gorgeous chime and "cut through" better than Tiger/Rosebud, to my professional ear it also got a way better distorted tone. It was much clearer. Just listen to the noodling at the beginning of "I Need A Miracle" from the Hampton show on the 8th and tell me you don't get what I like to call a "tone boner".