BeckySharp writes "With the nearly simultaneous release of Apple's Mac OS X 10.6 'Snow Leopard' (available right now) and Microsoft's Windows 7 (available Oct. 22), you get the inevitable debate: Which is the better operating system, Windows 7 or Snow Leopard? To help determine that, Computerworld's Preston Gralla put both operating systems through their paces, selected categories for a head-to-head competition, and then chose a winner in each category."
Relatedly, Phoronix has posted Snow Leopard vs. Ubuntu 9.10 benchmarks
. They ran tests from ray tracing to 3D gaming to compilation. Their tests show Ubuntu 9.10 winning a number of the tests, but there are some slowdowns in performance and still multiple wins in favor of Snow Leopard, so the end result is mixed.