You are correct about the Beta format but the reason it failed was because they thought that the better product wuld out sell the 6 hour play and record format, and it didn't.
But that does not equate to the PC vs Mac situation. Mac's are no better and no worse than PC's.
I'm happy to leave it at that. I may be a strange bird, but I am glad there is such a thing as the Macintosh out there because I prefer. I know others who wouldn't touch, and believe it or not, I am actually friends with them.
Have a glorious day.