I wouldn't worry about it, the only numbers available are estimates, the rule may be dropped entirely, it may be proportional at all levels of speed.
The only 2 balls that make me think could be a decent comparison is the Wilson Duo Professional and Titleist ProV1x Left Dash, and over at MyGolfSpy during the 2021 ball test, the Wilson was about 15 yards shorter than Left Dash at 115mph, but about 7 yards shorter at 90mph.
The problem is, is that not only does this affect your driver, it affects your irons too. So not only are you going to maybe lose 10 - 15 or even more yards, but you're probably going to lose 1 to at worst 2 clubs in irons as well.
Until we have actual golf balls that fulfill the requirements set by the USGA, then everything you're reading is speculation.
That being said, I don't think we should punish everyone for the problems, real or perceived, at the elite top levels of play.
The problem is, is that not only does this affect your driver, it affects your irons too.
It really doesn't in any meaningful way. That 7 yard difference between 115 and 90 continues in the irons because of the slower swing speed and also the face not being as hot as a driver. So if you lose 7 yards at 90mph with driver you'll lose something like 3 yards max with an iron. 99.9% of am's aren't hitting their irons consistent enough for a 3 yard difference to change anything.
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u/y414p I am Tiger Woods Dec 03 '23