yep, whoever gets the kill first, has the world first. 10 or 25, it doesnt matter. It's like Hillary and Norgay were the first to conquer Mt. Everest. No one cared that they used supplemental oxygen. They got there first. No one said it wasnt real because they had it easier and the real Everest was conquered at '78 by two guys no one really knows (yes, I had to look up the year from wikipedia) because they did it without use supplemental oxygen.
Also, Amundsen and Scott and race to the South Pole. Dog sledges vs just raw manpower.