It would have been better if you had said -- "English is not my primary languages and especially english maths are hard for me to grasp." -- instead of saying "it certainly seems deceptive".
You say you are familiar with box plots, so you should have no difficulty understanding that box plot shows - the Perl and Ruby programs have very similar performance when compared to the fastest programs.
"Visual Presentation of Data by Means of Box Plots"
Further, if you show me the actual calculations done, i will understand it perfectly fine. Yet you refuse to do so. I do not understand why, and i hope you can understand how that makes me even more distrustful.
On the graph in the overview page Perl was shown to significantly outperform Ruby in a number of benchmarks, yes, i could see that. Yet the median of Perl was still set higher than the median of Ruby, which could possibly be explained by perl also being outperformed significantly in one benchmark, but which was not supported by the actual direct comparison numbers.
So i ask again: Please show me the actual calculations performed to arrive at the median values shown in the overview graph.
>> Please show me the actual calculations performed to arrive at the median values shown in the overview graph <<
The important thing which you did not bother to point here even once is that the comparisons on the overview page are done against the fastest programs of all languages, thus weighting the results by a factor that is simply not present when one language is compared directly against another.
So, alright, the graphs do entirely make sense.
Would you be open to a patch that reworks the language vs. language comparison pages in such a manner as to make this relationship obvious?
Is stated in plain sight - twice - on the overview page.