Consider - there's an election, at the end of which (hanging chads notwithstanding), there's a winning candidate and a losing candidate. 'Winner' is based on a count of votes. You voted for the candidate you thought was 'the best'...but that candidate may not have won. You're entitled to your opinion, and if you picked the losing candidate, that doesn't invalidate your opinion. But at the end of the counting, you need to understand that the candidate you liked best lost, and your opinion is in the minority.
Note that in elections, the outcome of who wins can be more complex where a person can win without having a overall majority of people vote in their favour. Elections are just another analogy that fails as you could just as easily argue that it is not always the best person or the person with the best policies that wins but rather the person that sells themselves and their policies the best, meaning that a good percentage of people had the wool pulled over their eyes (i.e the winner should not have won.)
But really, lets not drag politics into discussion about cameras.
But there was an election, with a winner and a loser...and Canon has sold more cameras than Nikon.
I prefer to look at trends rather than specific points in time, i.e I'm more interested in knowing if Canon/Nikon's DSLR share is growing/shrinking than what specific percentage it is.