Various teams at Microsoft should be congratulated for their efforts. A few years back, ASP.NET was last (or near last) on this benchmark for simple, plaintext requests. They've come a long way and put some serious engineering into their system.
Virtually every single item on my list is now completely irrelevant.
Although I'm not a daily developer using .NET anymore, I am astounded that such a turnaround was even possible. My hat is off to you and the teams you work with. Also, for the record C# is still a phenomenal language in my book.