Buddy, get a clue pls. What databindings in MVC?? C# 5 support for async is excellent (almost as good as F#), recently Python's Guido said he's gone copy that syntax to Python. I don't know what you mean by normaly, I use it everyday.
I've run a few small test to see how Windows and Linux implementations of Node compare and Windows came on top every time. I think Microsoft put a lot of effort into a proper port, using Windows excellent I/O Completion Ports. Plus I don't think Google could ignore Windows performance when developing V8.