.net performance is good once fully warmed up JIT, wich never happen for most usecases, only in raw and longrunning benchmarks

so no, real performance scenarios, .net don't do better than GO wich is AOT compiled

mono performance is very bad actually

generics isn't playing on same level as metaprogramming in D, not even close to templates in C++, even Rust do better here

using roslyn compiler API is nice, but again, it is not the same as using the language itself already, the experience is different, it is on other hand much better than what GO has to offer