My main takeaway from this quiz is that it is very hard to lead the league more than twice. Julio - twice, Megatron - twice, Andre Johnson - twice, Torry Holt - twice, Marvin Harrison - twice, Steve Largent - twice. And then Jerry Rice with seven times. Wow.
This is going to be an unstable list because it helps to play on a mediocre team. Good teams get ahead and then run the ball. Bad teams get behind and then pass to try to catch up.