Which of these two dimensional array are advantageous to use and why?

Question

In a facebook group, I saw a question like :

If a row dominated two dimensional array in the following which one is advantage and why?

Answer 1

However, there could very well be extenuating circumstances. For instance, if the numbers are both positive and negative there could be patterns to them such that one order would lead to an overflow (or loss of precision if floating point) where the other would be much better behaved.