Have you only seen one benchmark or did you choose such a biased source for trolling?
How I know this graph has nothing to do with machine learning? It has JavaScript listed and JavaScript is on the faster end of the chart.
Do you really expect anyone to believe that a single threaded JavaScript is going to outperform python or R with highly parallel machine learning algorithms?
You can't parallelize a for-loop the way you can apply a function on every member of a vector. If code can be vectorized in Julia, that is what I'm interested in seeing. These samples are obviously not intended for distributed compute. Thousands of CUDA cores sit idle waiting for this synchronous for-loop to finish.