None of it matters. I believe in the next 10 years Apple will ditch high-end computing for the ipads, ipods, etc. and Microsoft will be on the decline because Google will stomp them both into dust.
NOTE: I'll also be playing games on a Google console.
I can see Apple ditching high end computing, but unless Google steps up their game they will always be playing second fiddle. I believe there will always be a market for laptops and desktops so people will probably still use Microsoft for home computing/business needs.
Personally, I just can not see tablets replacing traditional computers until the technology is more stable and you can use actual programs instead of apps. I have a tablet, and it's fun to use, but it lacks something that can be found in computers: stability and a good OS that wasn't derived from a phone.