The difference is that in Julia one stays within the language, doesn't need to use subsets of the language or optimized C libraries where the language plays a glue role.
I would agree with the article if Cython and Numba would support 100% Python or Numpy wasn't used to achieve similar execution speed.
I would agree with the article if Cython and Numba would support 100% Python or Numpy wasn't used to achieve similar execution speed.