In my personal opinion, the right questions to be asked now are not “Does Julia have performance advantage over Fortran?”, but “Does Fortran have performance advantage over Julia?”, and not “Will Julia replace Fortran or C/C++ in high performance area?”, but “Do we need to stay in C/C++ or Fortran for high performance area?”
The correct answers to the right questions are “No” and “No”.
It is outdated to suspect that Fortran (or C/C++) is faster than Julia.
To the best of my understanding, when the code is written correctly, Julia and Fortran are about the same speed of computation. We cannot say that one is faster than the other.
See also