Yeah because even with my older HP system (basically P4-stlye Netburst based Xeons) I find that even Windows 8 (while it's only slightly less-compatible with XP-era applications) it seems to use more of what the system is capable of.
I'm not a gamer (except for old DOS era games once in a blue moon), but as for applications it seems there has been a world of improvements in recent Windows builds.
Here's how I rate the past four Microsoft OSes on backwards compatibility for running older Windows games:
least compatible: Windows Vista (There was nothing really "wrong" with Vista, but Microsoft changed the driver model from the ground up, and some GPU IHVs were very slow to field solid drivers, not to mention the fact that Vista required about one gigabyte more system ram on average than any Windows version before it, IIRC.)
Less compatible than I would have believed at the time: Windows 7x64 (Many games I had at the time--and I don't mean just 16-bit games because those all run fine under Dosbox in Windows--simply would not run at all on Windows 7. However, most of those games ran fine under Win8/8.1x64; and all of them run under Windows 10x64!)
Very compatible: Windows 8/.1 (Runs everything almost but not quite as well as they run under Win10x64. Had to use DEP exceptions for many games in 8.1--some just wouldn't run at all. Windows 8/.1 was severely hampered at the outset by a horrid GUI that to this day I can't stand and never use with Win10...;))
Total Compatiblity: Windows 10x64. (As I said, I have no game that won't run under Win10x64 atm. It is rare that I have found making a DEP exception to be necessary to get a game to run. Win10 is pretty much what Win8 should have been originally, etc. )
If we say that Vista was "Vista 1.x" then Windows 7 was "Vista 2.5" and Windows 8/.1 was "Vista 3.x" and Windows 10 is actually "Vista 5.x"....;) (According to my own personal, convoluted scale, of course.)
My two cents on the subject...;)
I think when I was 14, I really got into them and knew a lot about them. Now, I know a lot more than I did before.