I remember reading these results a little while ago and thought the numbers were great until I saw the netty results. There is a lot of work left to be done.
My understanding is that the ASP.NET team started at the bottom of the stack and is working their way up. They want to get fundamental HTTP serving basics nailed first. I think that makes sense - they were getting around 170k rps in September, so there were definitely some things to sort out at the basic HTTP serving layer.
(Or does that even make sense, given that undiscovered exploits might require a hardware upgrade?)