>> Don't back up your claim with flawed benchmarks.

:-)

" How fast is Rust? Fast! Rust is already competitive with idiomatic C and C++ in a number of benchmarks (like the Benchmarks Game and others)."

https://www.rust-lang.org/faq.html#performance

>> In 5/10 benchmarks, the benchmark games claims Go has equal if not better performance than Rust. Am I supposed to believe…

Believe that those Rust programs gave those measurements, and those Go programs gave those measurements (when compiled and measured as described on the website in tedious detail).

It does matter how the programs are written!

Write better Rust implementations for those tasks and contribute them --

http://benchmarksgame.alioth.debian.org/play.html

> Making the claim that C is twice as fast as Rust because of 5/10 benchmarks in the "benchmark game" shows an incredible lack of common sense to me.

Actually, 2x is likely the lower bound of how much faster well-written C is over Rust. Rust developers have an interest in promoting their language so they will make sure their test programs runs as fast as possible. C doesn't need that kind of marketing.

For example, the Rust solutions were all updated in 2015 while the C solutions hasn't been touched since 2013.

> In 5/10 benchmarks, the benchmark games claims Go has equal if not better performance than Rust. Am I supposed to believe now, that a managed, garbage collected, 6-year-old compiler, language is as fast as as language without a runtime running on LLVM?

It doesn't run on LLVM. It takes advantage of LLVM to compile ELF executables. I said that common sense should be used.