While I agree that the KT133A mobos are great, Ananand used a very immature AMD reference mobo to test the 760 chipset. DR TOM has found much better performance so the 95% number is somewhat in question.
Wouldn't bother me, the KT133A mobos are Ocing like crazy (BIRDS and Durons hitting 150fsb) so unless you have applications with high memory bandwidth, (which actually suite the P4 much better), 133A mobos are the best bet.