This officially proves how great the Go code is! I mean: You have easiness and friendliness and high level language of Go for only 50%~70% slower performance. I always thought what happens if they port to Rust? Will it also become an order of magnitude faster? Turns out it really is not worth the cost. Go is perhaps just the best language.
Go is not higher level. If anything I would consider Rust higher on the abstraction ladder than Go. Or rather it's perhaps better to say that Rust is higher level but can go down to a lower level than Go.
I both agree with you and still think my initial idea was correct, and it means that I have expressed it very badly. What I meant by higher order was all the little niceties Go has that becomes a nightmare in Rust, the memory management, simple language; I mean just think about working with strings in Go vs Rust. The amount of boiler plate stuff always gives me a headache in Rust. But you're right, the map to C and C++ and go is orders of magnitude less developed in that terms.