I does not appear that it took care of the battery problem.
In the morning when I get up I take my laptop and eat and get ready for work. Before ML my battery was down from 100% to 98%. After ML for the same time going to the same sites the battery is down to 83%.
I wonder if this problem differs with the Retina pro's as opposed to other machines. I have not noticed a huge problem with my 2011 Air. Yesterday I was using it unplugged for 2+ hours, and was connected to a thunderbolt drive for a good hour and went from 98 to 53 percent in that time. Considering the work I was doing, I did not think it bad.
Going to test right now. Intend to be writing for the next hour or so, and am currently plugged in at 99%. Will see how quickly it drops.