Yeah I know, but a)both spells are in the SRD, and the description of Feeblemind is specifically limited to wish, heal, limited wish, or miracle. Break Enchantment is simply just not on the list. It could be, but its not. This to me is the trump argument, and pretty hard to counter.

b)All of these spells are much higher CL than break enchantment.

c)The fluff just doesn't seem to fit for me... whether or not you can fix instantaneous effects aside... Feeblemind is a debilitating condition that must be cured, and the spells listed are the typical spells always listed for removing such conditions.