it just increases the challenge for the winning team... nothing wrong with a bit of extra challenge once you're ahead by a couple of caps... will make it more fun for both teams... its not gonna help the losing team much anyway... once they start capping they lose their bonuses so the bonuses arent gonna help them beat the other team... the bonuses are gone before you get even with the other team as far as i can remember...
some details would be nice btw... just how much bonus power are we talking about and at what capdifference does the bonus start and stop?