Very true VCU. The key words were "good wrestlers" It doesn't mean they will become champions but most already have the right state of mind for competativeness speed and ajility. Yes a strong chin deffinantly makes a big differance. Would you rather go to the ground against a brawler or a wrestler? Ive been around champion wrestlers and the regement of training doesnt match those of an avarage martial arts student.
My nephew eats right, runs twice a day, weight trains once a day as well as wrestling practics once a day. All that just to be competative. My brother still trains in a simular manner.