Jesus christ, why is everyone taking the numbers literally? He is not saying it HAS to be lowered by 1x with the exact same base of money/xp.
I'm all up for changing the multipliers somehow - for example making them 1x to 10x, lowering the base gold/xp gain to half, raising multiplier +2x for win, losing 4x for a loss, whatever. The numbers can be tweaked. The point is that the sudden drop for a single loss is gay, especially when you get autobalanced a lot.