You can argue the technicalities till the cows come home. But from a non techie point of view to a guy who just uses the machines. The feeling of quality and rock solid'ness of the amiga multitasking has never been matched by windows for me. Thats one of the reasons why after all these years i STILL want my Amiga OS back and to ditch my windows XP machine.
Theres so many nuances with windows that i've come across over the years, but i've just learned to live with them, because i've not had a choice. But it drives me nuts on a daily basis because i remember how good the Amiga once was. Simple things like if you sit and watch the clock on the date and times properties on ANY windows box, with NOTHING running in the background except system tasks. You tell me that that second hand doesn't keep jerking and stopping every few seconds. And this applies to everything, from flash animations in web pages, to video. I NEVER had that with the Amiga, the Amiga was rock solid and consistantly smooth. Thats the sign of quality.