Shouldn't be that way. Defenders usually cope with the regular corners. The doubling, however, is automatically turned into a header and the team can't do anything about it. I believe it should be counted as a regular one so that the players' stats can affect the situation and avoid conceding a goal e.g. from a 15q weaker team. I understand that the double corners affect all teams equally on theory but I'd prefer if my team had the chance atleast to defend somehow.