Isn't it sad that Bianca has all eight badges and she still thinks that she's weak? What does that say about the Gym Leaders? Both Ghetsis and N constantly belittled Alder and didn't seem the least bit impressed by him, and Alder himself was embarrassed at the fact that Cheren casually defeated the Elite Four.
I think it's time that Game Freak changed things around if we're not meant to think of the bosses in the game as a challenge. What they did with N and Ghetsis is a start, but it's not enough.