It really is the same OS kernel.

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Enter Spark, a seven-inch slate that comes running the Plasma Active UX, an open-source OS based on Linux kernel, KDE's multi-platform Plasma environment and a dash of Qt for good measure.

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By contrast, Windows 7, Vista, OS X Tiger, Leopard, Snow Leopard and versions of the Linux kernel released after September 2009 are all 4K aware.

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Note: While Android is based on a Linux kernel, the goal behind Tizen seems to be an even more open-source, flexible OS designed to be user-friendly and carrier-friendly.

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