But it's high performance given the semantics of the language. The work that has gone into making V8 perform as it does is extraordinary and should be respected, not mocked as 'hilarious'.
The benchmarks show that by using another language his code went 8x faster. Perhaps if he optimized his C++ it would go even faster. It's funny that people are saying 10x off the theoretical is high performance. I wonder if these people are living in a Javascript bubble.