I would say they're both as limited as Python, Julia far more so. R's stats packages get ported to Julia faster, though. Mathematica still can't do mixed genera

I would say they're both as limited as Python, Julia far more so. R's stats packages get ported to Julia faster, though. Mathematica still can't do mixed generalized linear modeling, and no other language (other than SAS and Stata) has a package for analyzing simple effects within them.