Windows was running Blockland with a res. of 1600x900
Linux (Ubuntu) was running Blockland with a res of 1024x768 (I can't make it full screen on Linux)
To see how many FPS you get on Blockland type this in the console: metrics(fps);
Windows

Linux

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Windows

Linux

Although considering Linux being free, it is very good at running games and is RIGHT behind Windows. The reason why windows is the winner here is because when Badspots map was loading and finished loading, there was less on Windows than on Linux.
I may be doing a comparison with Mac and windows, this time both of them will be ran at full screen and the same res.