When you earned 11 rank points that meant 10 other people finished ahead of you on that stage alone.
Rank points really is a count of how many people finished ahead of you in the entire match (minus the number of stages in the match). It gives you a value for your performance over all the stages. Think of it as how many times you were beaten that day.
The guy who came in 2nd with 8 or 10 points..... You won 4 stages so the best he could have done on them was 2nd. That'd give him 8 points for those 4 of the 5 stages. So he probably won the match with 9 or 10 points. That meant for the entire 5 stages, he was beaten 8 or 9 times that match.
He finished with 9 or 10 points. How often was he beaten? Either 4 or 5 times.
You finished with 15 points. How often were you beaten? 10 times.
Who got beaten the most that day?
Rank is just a scoring system. It makes a pretty good job of showing how many times each entrant had someone finish better than they did.
Matches that have a lot of different length stages, rank is a very good way to pick the best shooter. With matches where all the stages take very little time, rank still shows what it shows. However, speed is the name of the game, and rank isn't a speed result. So using TT is probably the most suitable way to score today's matches.