I have seen Yes with both drummers, and I have always felt that Alan White was a huge mismatch for the band. Bruford was very good for them, a great technician but I always felt he was a bit to restrained and minimalist, but that was his thing and he was still very good.
Enter Alan White. I have no idea if he was just a personal friend of someone in the band, or it was because he played with John Lennon, and that was a good calling card, but he was , in my opinion completely wrong for them style wise.
Starting a few years back, myself and my concert-going buddy saw him with Yes twice at the Celebrity Theatre in Phoenix, and it was truly sad. The poor man was obviously ill, and could only play a couple of songs before taking a break and being replaced by another drummer whose kit was also set up on the stage.
The really sad part was that it is a round revolving stage at this venue, and when he would take his breaks, he would be slumped over on a stool spinning around for everyone to see! He seemed to be a very nice guy, but he just didn't have the chops to match his bandmates, even when he was well. I'm glad that he's not suffering anymore.