The reference really doesn't say what you posted. It just says that python 3.6 was up to 45% faster than 2.7 on some benchmarks and up to 54% slower on some oth

The reference really doesn't say what you posted. It just says that python 3.6 was up to 45% faster than 2.7 on some benchmarks and up to 54% slower on some others (which the author of the suite considered largely unrealistic). Where is the evidence that before python 3 was significantly slower than 2.7 before 3.6?