Why does it need to be compared to any OS? One of the reasons I switched to Mac was the OS X was far more stable than Windows. I still want a stable OS.
I'm not sure that was ever true but certainly hasn't been true for over a decade. Neither OS is fully stable (how ever you might define that) and neither OS is a terrible unstable mess either.
I am. Absolutely sure. Stability was the reason I switched to Macintosh two decades ago. I've had to run Windows boxes for work at the same time, and with the exception of the most recent few years, Macs have been 100% more stable than Windows.