No one is handing out big cocks to men who have won the Nobel Peace Prize. So, no.
I would no more respect a man for a large cock than I would respect him for having been born with straight teeth or large hands. I may lust after a man's body, but that doesn't earn my respect either (although I may respect the hard work that goes into maintaining a beautiful hard body). Genetic physical attributes like penis size, teeth, and hands are gifts from one's parents, they are not earned. I respect men's accomplishments and behavior, not their physical attributes.