https://en.wikipedia.org/wiki/Macintosh_128K
https://en.wikipedia.org/wiki/Macintosh_Plus
I think the example is a bit too sluggish but is probably a more correct presentation of the actual facts than my nostalgic outburst.
I was an Amiga kid. I had friends and co-workers who had Macintosh Plus and they always seemed to be so S-L-O-W to an Amiga.
Amiga 1000 from 1986 https://youtu.be/CDWdVk-hmgA?t=51s
The window draws were also slow BUT Ray Tracing and full animation compared to that lame Macintosh is just a whole different generation. Amiga lost and it took till 1994 or 1995 to beat an Amiga in 1986.
Of course, the newer one has newer graphics, but it also has enough transistors to replace each one in the 68k with a whole new 68k.
This was of course done because the systems back then were so slow that they would be in danger of regularly dropping key presses or clicks otherwise, which would have turned people off these newfangled electronic typewriters. But the result was that the interactive experience with respect to latency was given great importance in the design of those systems, unlike today, when it is taken for granted that people will accept whatever laggy system they are given, and will just be directed towards a CPU upgrade if they complain about it.
See how fast it felt.
https://youtu.be/XwbrCYJcrKQ?t=4m34s
No way and NO HOW! That statement is 100% false. The issue is you remember that it felt fast. My Amiga felt like lightening to me in 1985 and I still boot it up from time to time. The delays in everything is over the top and Mac 128k were horribly slow.