I got qualified on our equipment quick and was in a position where I was training my peers who I was ranked against. If I were an asshole, I would have trained them poorly and drug it out. I didn't, but someone who is goal oriented to climb through the ranks as fast a possible, it is a logical action that I could have taken.
That's of course the obvious way this goes wrong. Bad intentions. The much more insidious version is that you could have just been a terrible teachers, maybe you suck at training your peers, and you don't know.
The end result is the same. You look like the only person who gets it amongst the riff-raff, but in this case you don't even have a choice. The system has produced a poor outcome not because anybody abused it, but because it was a bad system.