Compare vs Radix

Question

Is it better to use comparison or radix sort to sort a long sequences of java int array?

I know that I should probably use mergesort (NlogN) for comparison sort, since it is one of the fastest and compare that to LSD or MSD. I thought about how for extremely large N, the logarithm would be larger than runtime for LSD, but other than that, the mergesort (comparison) is better.

I wonder if my reasoning is correct because I have seen a question asking about Strings and the answer was the aforementioned. Now this question is about long sequences of java int array and I wonder if I am missing the point.

Any help is appreciated :).