The simple messages that APS tries to communicate are: if you're going to run ROP, run far far enough ROP; if you're going to run LOP, run far enough LOP; and the setting at which you're going to give your engine the hardest beating you can give it is ROP. Those messages are completely consistent with NAC-754 and all other relevant data.
Yes Balloon. But all you are doing there is tilting at windmills. Have Lycoming or TCM ever argued that running a fuel-air ratio of 0.07 results in a lower CHT than running either a richer mixture or LOP? Nope. They know that. That is why they do not recommend that mixture for high powers, generally above either 65% or 75%.