For me, "blurry" ie. antialiased is much better, so long as it results in better defined letter forms, as it does on MacOS or when using freetype with hinting set to low or turned off. HiDPI simply means there's no tradeoff.
I think nvarsj didn't mean no AA but that Linux uses a different AA algorithm.
The use and magnitude of font hinting is largely what makes the difference. Windows used aggressive hinting until Windows 8, and it's also the default in many Linux distributions.