Plus, here is what we have to look at. If we did not know what kind of ball it was, all we could describe it as is a 6-7 inch PAP, negative CG, and a MB in the track. Look at each factor one by one. A long pin to PAP allows for greater than average length for drier conditions. Back in the day, my friend had a Pearl Boss drilled pin directly in his track and evern with his fingers, cg in the palm, and used it on fried stuff and killed...cg negative...well..it matters, but not much, as determined, especially in a high mass bias ball. As for the mass bias, MB in the track is for a smoother backend. The only thing I could see out of this is the pin in your track has a tendency to raise your track (did for me on the one ball I tried a pin in your track drilling and my friend above with the Pearl Boss), if this person had a lower track, this drill could have helped raise the track, allowing better roll on the ball, which in turn allowed the ball to face up toward the pocket better with a better angle to kick out corners, etc....
So many factors at play, anything could happen.
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