Thanks for the nice compliments. It's always nice to hear things like that.
I use a very high quality mic right in close proximity of the tops, and even on my computer it was very clearly audible to me. Linked below is a clip from the video I cut out of the video for you. See if you can hear a difference in the before and after. And I have had many people tell me that they could hear a clear difference as well. But I'm sure it would depend on the quality of the speakers/system they were being played back on.
No there is not a comparison of one of my guitars without voicing as I have never made a guitar without voicing it. It would seem like a waste to build a whole guitar and not voice it. I do wish it would have been feasible to have recorded sound samples of the tops I voiced for the video in finished form but I only build about 12 guitars a year and that would have meant delaying the video a long time, and so I choose not to, although quite a few people have mentioned they would have liked to see that.