Those example measurements in the Benchmarking package are useless. They haven't changed in ages. They are exactly the same even in the oldest version I have installed, which is 10.0 from 2014.
If you open up the package source, or evaluate
Benchmarking`Private`$BenchmarkLibrary
you will see that there are some results from 2010 / M8.0 and some form 2014 / M10.0
Mathematica's performance has improved a lot between 8.0 and 10.0, and again a lot since
Furthermore, did the benchmarks themselves change? We do not know. Thus comparisons are quite meaningless.
The benchmarking package is interesting if you compare two computers with the same M version, or compare successive versions of M (and manually verify that the benchmarks have not changed). But even then, it is probably in need of some updates ...