People will be cynics and critics no matter what's used to compare one product to another. You can let them set the parameters and if the results prove not to be in their favor, they'll cry foul, foul, foul.
I've personally asked Phil why should I even consider a Guru as opposed to other pieces out there on the market, including an Intellect and the original Mastermind. I was impressed that he took the time to answer my questions with some of the data that he'd amassed in testing the Guru.
As for the video comparison of the other bowling balls, it pretty much confirmed what I had suspected about most of them. But the fact is that if you like a certain ball manufacturer, you're pretty much going to stick with that company and defend that company until they begin producing a bunch of junk.
I mean, I've gotten a bit of grief among some of the bowling peers I've come to know since my return to bowling in my using Brunswick/Radical equipment. Just about all of them use Motiv and Storm/Roto Grip. Does the bowling ball(s) they use make them that much better than me? I doubt it very seriously. It's my observation that it's a matter of preference for what equipment I use and what they use.
I used to be in the car business. And I remember very rarely you could talk a Toyota/Lexus owner into owning a Honda/Acura or Nissan/Infiniti, and likewise a Honda/Acura owner into owning a Toyota/Lexus or Nissan/Infiniti, or a Nissan/Infiniti owner into owning a Toyota/Lexus or Honda/Acura. They pretty much were brand faithful. It would have to be something very extraordinary to convince them otherwise. I would venture to say it would be the same thing with a bowling ball.