If you ever get time download the blue print software. You will see how quickly the diff will increase on a ball just by drilling the pin even with or above the fingers. Because of how much you take from the side of the ball it would easily put the diff close to .020 before adding a weight hole. Adding a p3 or p4 hole easily will take it up even more. Same for a weight hole 2.5" down your val from your pap.
I know, no, have learned those concepts. I just find it impossible to believe that drilling holes is going to take .009" differential core up to anywhere close to a .050" differential.
If that were true in absolute terms, there wouldd be hardly any need for 90% of these complexly designed cores we have today.
After playing with the software and graphing the results the biggest factor in the balls reaction was surface. If I drilled a ball with a 3" pin to pap and a 5" pin to pap and over lapped the results they were almost identical. Change the surface and the results were much greater. The difference between 2.55 and 2.49 isn't what you think. Its a difference of 0.06 hundreths. The cover of either will be a good match to get the bowler in the ball park of his Sun Storm
But that's always been true. In practicality, we only have from 2.47" up to 2.60" to deal with. For slower speed bowlers, the difference between 2.49" and 2.55 is or can be large.
Besides this discussion of the core's dynamics, in practical terms, I myself wonder what the difference would be between this red Sun Storm and any current Storm ball. They'd have to be thrown by the same guy on the same lanes, but the results would certainly be interesting from an educational standpoint.