Originally Posted by cyccommute

.....Additionally, you can almost double the deceleration by pushing back and dropping down. A rider seated in the “normal position” can achieve 0.5g of deceleration before the bike goes to the point of pitch over. Pushing the CG rearward and downward about 4” each increases the deceleration to a little less than 1g. An incline will decrease both of those number which is why mountain bike riders almost alway push off the back of the saddle when braking.

You don’t need a weaker brake on the rear, you just need to use your brakes more effectively.