If you're referring to the SIMD aspect (I assume the other points don't apply here): It depends on your perspective.
You could say yes, because the C# benchmark code is utilizing vector extensions on the CPU while Go's isn't. But you could also say no: Both are running on the same hardware (CPU and RAM). C# is simply using that hardware more efficiently here because the capabilities are exposed via the standard library. There is no magic trick involved. Even cheap consumer CPUs have had vector units for decades.
You could say yes, because the C# benchmark code is utilizing vector extensions on the CPU while Go's isn't. But you could also say no: Both are running on the same hardware (CPU and RAM). C# is simply using that hardware more efficiently here because the capabilities are exposed via the standard library. There is no magic trick involved. Even cheap consumer CPUs have had vector units for decades.