@ CC Ricers Interesting find and they say the same thing about Windows 7 Being Number one.If you want another opinion opinion on OS usage, you can read the statistics on Steam. They are just on Steam gamers, but it's still a good representation for the audience of PC and Mac gamers.
The problem with steam though is they are limited to only the gamers that use steam as you mentioned. But I was looking over what you shown on steam and its interesting to note the hardware info they keep stats on. Very interesting.
@ Joe Van Sickle I wish you the best in your game my friend. You have a tremendous talent there. Do not let others keep you from finishing. I had that happen to me and I had given up. But I am back with my project again and I am improving it all the time. So keep up the good work.