That only applies in an apples-to-apples comparison, i.e., same data structures, same algorithm, etc. You can't compare sorting in C and Python, but use bubble sort in C and radix sort in Python.

In here there are different data structures being used.

> D[HO] and Julia [HO] footnote: Uses specialized datastructures meant for demonstration purposes: more ↩ ↩2

You're right of course but it also depends on how long you want to spend on it. If Python gives you radix sort directly and the C implementation you can have with the same time is bubble sort because you spent much time setting up the project and finding the right libs it kinda makes sense.