I was thinking about how exactly I would use these equations to optimize my gear and it seems like we need a better way to go about that than finding the break even point. The break even point is good to look at if you are going to balance with gems, but ideally you would balance as much as possible with reforging before going to gems so that you can use as many stam gems as possible.
Im no theorycrafting wiz, so someone tell me if this is wrong.
Steps in balancing your ratings:
1. Maximize the damage reduction formula as a function of AR and MR. Use the equation AR = TR - MR to replace AR in the formula so you can take the derivative, where TR is Total Ratings (MR + AR).
2. Once you get the optimal ratings, try to reforge as close as possible to those.
3. After you have reforged as much as possible, take your current higher rating (MR or AR) and plug it into the break even equation, then gem as much as possible to get close to that value.