you couldn't say any of the newer computers were that much better, particularly in terms of raw performance. It was the PC clones that decoupled the system clock from the video clock making it possible to release a machine that was clocked substantially higher than what you could get six months ago, enough that you could buy a new computer in two years that was more than twice as powerful as your old computer.
broke down and the industry has had to multiple cores, GPU acceleration, etc. to be able to make the case that today's computer is better than the one you had before.