I wouldn't sweat it, but the basics (as I understand them,) are your super-bump power is caped by your earned merit or your activity for the last year, whichever is less.  If you've been steadily active for the last year, and you've earned a boatload of merit you're base bumping power is 364.  If you've earned fewer than 364 merit in the last year, your base bumping power is equal the number of merit you've earned.  If you're activity for the last year is 14, and you've earned more than 14 merit, your base bumping power is 14.  Then the power of each user's super-bumps decays with use.  So it's somewhat exclusive to those who are active and contribute, and the decaying affect helps make it resistant to abuse.

But as theymos said: