What I mean is if you are on version 2.whatever you are not going to be able to move up to Version 3. whatever and so on. A lot of Android Tablets are that way especially some of the cheaper ones.
The Windows 7 tablet is going to run anything that a normal Windows 7 PC or laptop will run as long as it meets the sys requirements. It will also integrate better with other Windows 7 PC's or laptops you currently have. As for Android I have seen that whatever version you get is what you are...