I've long disliked the acceleration ‘feel’ of Mac OS X, and have worked around it with acceleration-curve adjustments etc., but I find the explanation provided

I've long disliked the acceleration ‘feel’ of Mac OS X, and have worked around it with acceleration-curve adjustments etc., but I find the explanation provided highly doubtful. Why? Well, for one: various games circumvent OS X’s own mouse speed/acceleration settings, and when they do so instantly reproduce the ‘feel’ from Windows. The same is true when emulating Windows through virtualisation software. If this was a hardware lag issue, then surely both of these would be affected too? And even were it a hardware issue, it shows that you can remedy it in software. I'd long believed that the problem would never be addressed, and then a couple of months ago I used a new Apple Magic Mouse with Lion; the acceleration and speed was so good out of the box that I didn't install USB Overdrive as part of my new Mac setup routine for the first time in over 5 years. Could it be that it's a driver issue, or just different devices have different acceleration characteristics? Perhaps, but whatever the case might be, I'm far less inclined to attribute it to input lag.