Earlier quoted context omitted.
I noticed that my iPad mini 2 finally falls off the list, but that thing is somewhat ancient. However, my Thinkpad X220 (maybe circa 2011?) still runs Windows 10 and Ubuntu, allowing it to stay up to date on security patches. In a way, Apple's support levels are only impressive because we're inured to quick device expiration in other contexts (e.g. phones).
To be fair, mobile development is a few years behind laptop development, and it makes sense that it would plateau later (thought with the current generation of smartphones we may be reaching that plateau). A 2011 MacBook Pro 13" is comparable to your X220 (dual core i7 available, 8GB supported RAM, Intel HD 3000 graphics) and while it does fall off the supported list for macOS Catalina (mid-2012 MBP is the earliest s…
On Android if you are lucky, you would get one OS update and around one or two security updates. This on flagship devices.
Even Google's, are only guaranteed to get updates for three years, starting from the year the model was initially put on sale.
In any case, at least in most European consumer shops, you will see that the large majority of OEMs are migrating to hybrid laptops, convertibles with Windows 10 on them. The Android tablet section keeps getting smaller.