Someone posted the question on StackOverflow and it got closed as "not constructive". Is there a way to browse the "not constructive" questions on SO? They seem to be all the best ones.
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There are parts of Windows that are implemented just the same as Linux, and parts that are faster. Some parts are slower, notably the file system. But there's more to Windows than just the file system.
So, I'd say that's why it's not constructive.
It sounds like you simply don't know enough about the issue to judge whether it's constructive.