Yes, one of the great features unkown to many Mac users is the ability for PC adobe users to instantly scroll through the options/values of many settings. Most important to me for quick and loose abstraction in photoshop is to have this ability to use my mouse scrollwheel to whiz through every blending mode with instant gratification. With Macs I am forced into a disruption of attention by having to click on the menu and select the next option each time, something I won't leave to pure muscle memory. Sure, you can kind of stick the Mac mouse pointer towards the bottom of the blending modes drop down menu and click to get a sort-of instant menu action, but it catches on the separator bars so you can't really test them all fluidly.
There was the argument I heard from my buddy in computer camp, back in '02 when he taught me some incredible tips, that you should just learn how the blending functions each work rather than relying on the scrolling. Well.. you should indeed know how each one works, but IMHO it is not practical to prevent play in a creative field.
If I'm not mistaken, it's a symptom of the OS rather than Adobe's decision.