Unless you're referring to 3 Gun and Steel Challenge, Production and Open division have two different PF requirements. In USPSA Minor PF is as you stated 125,000 or 125 put more simply, while Major PF is 165. While yes, when you introduce a compensator the general rule of thumb is lighter bullet/more gas works in your favor, but they're not the same power factor.
I'd agree that adding more powder/gas to a given bullet weight just to get better compensation won't necessarily and in all cases result in an overall flatter/softer shooting pistol, but it may be worth comparing the two loads in the specified gun. Since in our defensive/carry guns we're generally not dealing with handloaded rounds where you personally can tweak the powder charge by fractions of a grain, it's entirely possible the higher pressure 147gr +P+ loads could give the shooter a more desired recoil impulse than the standard pressure 147gr loads. I found this to be the case recently in testing with my comped P320 - I actually like the recoil impulse of 124gr +P ammo better than standard pressure 124gr loads. It seems (to me personally at least) that the 124gr +P hits just the perfect ratio of bullet weight to gas volume with my chosen compensator to be the perfect solution for my personal shooting style and preferences.
Again this all goes back to the basic principles of selecting defensive ammunition in a handgun; Start by gathering a wide range of ammo with reputable track records, figure out what's really reliable in your specific gun from that overall pool, and from that pool of dependably reliable options narrow it down based on your personal preference. Adding a compensator just adds another variable that might give you a different preferred load as opposed to shooting the exact same gun minus comp