What was usually the outcome when Alexander and darius the third of Persia fought

In both battles fought between Alexander III and Darius III, Alexander was the victor. This was due to the fact that Darius turned and ran both times, leaving his superior army leaderless and in disarray and Alexander was able to defeat the far larger Persian army. Alexander captured Darius’s family during the first battle and he treated them as royalty instead of prisoners of war.