rtgjeg:To me it makes sense that a ball with two dots would be twice as durable as a ball with one dot, and 3 dots would be 3 times as durable. That is obviously not the case.
I agree that there does not seem to be a linear relationship between dots and # of shots. I've only been making comparisons between the WGT balls though. My first result of WGT B-ES was 28,75 Hits/per dot (sample size Kiawah 6 nine hole rounds, with 4 shorts from light rough, 2 from heavy rough, 1 sand shot) Ball was taken out of play at tee-box on second hole of 7th nine hole round.
Caveat - Although I've not been formally diagnosed with OCD, my wife suggests that this post is ample evidence to prove her suspicions correct.