would be heaveni'd imagine a native linux version of a game would offer far better performance to a windows equivilant
The vast majority of games use DirectX, a Microsoft proprietary API (which is the reason Windows is a popular OS for gamers as well as general use). Linux has to use OpenGL calls to substitute for DX functions, which doesn't always work well.
Now people seem happy for Steam to monopolise PC game sales. I don't know if those figures for box retail include web stores, in which case the PC games market in retail not as unhealthy as some make it out to be.
i'd imagine a native linux version of a game would offer far better performance to a windows equivilant
