No they're not. It depends on the packages and other software you have. For example, specific .NET framework versions you have has its own specific hotfixes. There hotfixes are only introduced depending on what software/framework you have. And some software you usually don't know are running in .NET framework require specific packages. This just means you still won't get the same thing just they have the same OS installed. Even having different BIOS brand already makes alot of differences on the OS.
Obviously you don't run XP & from the sounds of it you never have. The .NET framework versions are always updated to latest ones regardless of what software is being ran.
There's a "start new topic button" to click which is free-of-charge for everyone. You might check that out sometime.
There is no need for sarcasm.
I stated other things in response to your reply which you completely ignored. Your above comment has nothing to do with what I even said