If you want to prove your point, using totally unrealistic micro-"benchmarks" such as those is by far the worst way about doing so. You're better off giving no evidence whatsoever than you are referring to those.
Are there any more realistic benchmarks that we can refer to? Because I've read a lot about how Haskell supposedly runs faster because of its purity, but I've not seen a lot of evidence actually supporting that notion.
"[B]etter off giving no evidence" than pointing to measurements that provide a known context -- source code, implementation version, command lines, measurement scripts...