It needs to be emphasized how artificial these benchmarks really are. Here is the source for the Fortunes C# benchmark:

https://github.com/TechEmpower/FrameworkBenchmarks/blob/mast...

There's no routing or templating, it just writes a bunch of strings. No one would build an actual web app this way.

The only C# benchmarks that are remotely realistic are the mvc variants, starting with aspcore-mvc-ado-pg at number 79.