Two Rav Moshes - and Oral Traditions

It is interesting how "non-Ashkenazim" accept w/o much ado that R Moshe De Leone's publication can deviate from Talmudic norms - because after all the Zohar is predicated upon a Masorah!

Yet some of these same supporters of textless Masorah are clueless how R Moshe Isserles can publish halachos that apparently contradict with Talmud though based upon Masorah and even published Teshuvos - such as Maharil or T'rumas Hadeshen.

What Gives?

Whose ox has R Moshe Gored? :-)

KT
RRW