Well, that button probably dates from the late 80s or early 90s, when Apple was comparing Macs to branded IBM PS/2s and such that were sold to schools and enterprises.
And they weren't wrong, at the time. Those PS/2s were fuckin' expensive.
apple was never cheaper than their competition, and when IBM got into PCs they were also not even comparable in quality anymore. Reality is that even in the early days apples was also more expensive and they relied on a dedicated fan base to sell their trash, to be fair they sorta earned their reputation in the super early PC space with actually good products but when IBM came in, it had better PCs at lower prices and apple was basically riding on pure brand power. Then they had a few good hits with the ipad and later the iphone (tho the ipad was not as significant at the time as people seem to think it was looking back) and now they have been entirely eclipsed when it comes to phones and are once again reliant on hype and brand recognition.
It is not a unique history by any means but i feel it is especially egregious considering just how shit apple products are and how expensive they are.
So, I lived through that time, and I supported computers professionally during that time. I started working at a university help desk in 1989.
It's easy to go back and look at Apple products and white-box PCs of the era (or quasi-legit clones like Compaq, HP, Gateway, etc) and say, "oh, on specs, the Apples were MASSIVELY overpriced -- you can get a much better deal with the PC".
The problem was that PCs were nowhere near on par, functionally, with Macintosh.
Networking. We were running building-wide Appletalk networks -- with TCP/IP gateways -- over existing phone wires YEARS before anybody figured out how to get coax or 10base-T installed. We were playing NETWORK GAMES (Bolo, anyone) on Mac in the late 80s.
And when they did... what do you do with networking in DOS? Unless you ran a completely canned network OS (remember Banyan, Novell, etc. ad infinitum?) and canned apps specifically designed to work with it, you were SOL. Windows 3.0 and 3.1 were a joke compared to System 7.
I configured PCs and Macs for the freshman class in 1995. For the Mac? You plug the ethernet port in and the OS does the rest. For the PC... find a DOS-compatible packet driver that works with your network card, get it running, then run Trumpet Winsock in Windows 3.1, then... then... it was a goddamned nightmare. We had to have special clinics just to get people's PCs up and running with a web browser, and even then, there were about 10% of machines we just had to say "nope". Can't find a working driver, can't get anything working right. Your IRQs are busted? Who fuckin' knows. I ran the "Ethernet Clinic" until the late 90s, when Windows 98 finally properly integrated the TCP/IP layer in the OS.
Useful software on the Mac had a pretty consistent look & feel. On the PC? Even in Windows 3.1, it was all over the map. You might have a Windows native program, you might have a DOS program that launches in a console window, you might have a completely different graphical interface embedded in the software (Delphi apps, anyone?). Games were using DOS into the mid 90s because getting anything working right in Windows 3.1 was a total fuckin crap shoot.
Windows 95 started to fix things, finally. And Windows XP would finally bring an OS with stability comparable to Mac (arguably WIndows 2000 as well, but it was never really offered on non-corporate PCs).
The short version is: that $3000 Mac could do a lot more than that $1800 PC, even if the specs said that the CPU was faster on the PC.
You for got to mention the free and heavily discounted prices to get Mac computers into schools to get kids hooked on them. Which is something they still do to this I think.
At the same time Windows is going down the drain, so if you compare removed to that it definitely has an edge. And that 8GB Air is not that expensive either... And fanboy can tell you it can swap to SSD so fast blah blah...
But if you have the knowledge to use Linux, there are less and less reasons to go even near removed computers...
There's a reason why no-one bought IBM PS/2s. They were horrible value for money.
The real competition at the time was the thousands of other brands selling PCs. By that time IBM was plummeting in sales and other companies were selling most of the PCs. That's where 95% of the market was.