Technically the Amiga could display a rock solid hires picture but only on a special monitor that I personally never saw.

The priority on the Mac was to have a high quality monitor for black and white graphics. They put a lot of effort into drawing libraries to make the most of in-built display.

The result was that the Amiga was perfectly fine for playing games or light word processing but if you actually needed to stare at a word processor or spreadsheet for 8 hours a day you really wanted a Mac.