[Derda508]

Does size matter? And nutrition? Well, we all know for sure that a bunch of ... let´s say tiny south-east Asians, fed on half a bowl of rice per day, could not stand against a modern army of well fed, tall, well trained and perfectly equipped .. ahem .. let´s say Westerners. They wouldn´t stand a chance, wouldn´t they? Except they did.
Just like the (in average) shorter Romans beat the shit out of the (in average) taller Celtic and Germanic warriors. Just like the (in average) short Huns and Mongols did later with the (in average) much taller European knights. And this was when fighting was physical. Tactics, strategy, motivation, numbers, leadership, logistics, technology, resource-management and a lot of other factors are what counts. Physical size never really did.
Size, by the way, is not a very good indicator for strength, toughness and endurance. I, as a European, worked quite some time in south and south-eastern Asia. I was much taller and (that was quite some time ago, when I did work-out regularly) much more beefy than our skinny, short workmen. But hell, they all were much stronger and much tougher than all of us Westerners, because they were used to constant hard labour since childhood (certainly not a healthy way of life and with 40 they looked like 60).
And statistics ... hrmmpf, I don´t reach the 180,2 cm that I should (although I am guilty of blue eyes) but all the male Korean relatives of my wife are taller than me ...