That's not at all the same comparison. An equal comparison would be where the president's vote counts at 1 trillion votes. In that case I wouldn't bother voting

That's not at all the same comparison. An equal comparison would be where the president's vote counts at 1 trillion votes. In that case I wouldn't bother voting because even if everybody in the country votes for candidate A it'll mean nothing if the president votes for president B. The president's vote will always overpower everyone else's vote.