I admire your work ethic and attention to detail. I think the biggest takeaway from this is how much the high ratio house pattern negates technical specifications of the ball. I'm sure the margins get even closer on house when you start randomizing any two reactive balls.
USBC knows that preservation of "integrity" starts and ends with the pattern that is bowled on. They also know that if they mandate tougher conditions, that you'll see a large drop off from the majority of the base which are 160-180 avg bowlers. One they start shooting 100-110s on sport compliant patterns, they're just not going to bowl due to bruised ego or not having the physical acumen to get down the mechanics in order to repeat a shot, generate optimal rev rate/ball speed ratio, or simply don't want a challenge.
The ball rules are only in place to bring a close to their years of testing, hundreds of thousands of dollars in research, and thousands of paid man-hours. It's not the solution, but it makes them look like they've "come to a conclusion" and generate more $ for the ball companies & pro shops as bowlers replace equipment that's phasing out due to spec rules.
The ball companies and pro shops increasing revenue is the only silver lining in this.