It is obvious at this point that the most technologically advanced nation, especially in military technology, will win a war over another nation that is not as technologically advanced. But there comes a threshold, or a sort of equilibrium point, when technological innovation starts to matter less when faced with great numbers, especially if technological innovation is not that far ahead of the opponent’s.
In that case, superior industrial capacity will matter more. Think of the capacity of Nazi Germany vs. that of the Soviet Union in 1942. The Soviet Union, a larger nation, both in population and natural resources, than Nazi Germany, managed to create a massive military force. While Germany concentrated on quality, as was apparent in their tank designs, the USSR concentrated on numbers, and eventually managed to defeat the German military because the gap in technological innovation was not too far and wide.