Very hard to believe that one. I've seen plenty of videos of ball compression with driver swing speeds in the 130's and the ball doesn't deform nearly that much. For example:
[nomedia="http://www.youtube.com/watch?v=2Y57pw_iWlk&feature=related"]YouTube- Hi-speed video of a golf ball compressed by driver[/nomedia]
Who knows, though. A thin face driver vs. a static, thick plate of steel surely makes a big difference...