The issue of Edward's prints vs. the later prints made by Brett is covered in detail in the introduction to one of the "Weston's Westons" books- perhaps "California and the West".
Which prints are "better" is a personal opinion... should we respect the artist's original intent, as expressed in Edward's prints? Brett's prints of the same negatives reflect (to an extent) his own vision- although each was approved by Edward himself.
I don't think anyone has studied the prints Cole made in the 1970s and later, from Edward's negatives, against the ones made by EW or BW.
That would be interesting... but in this case "better" is in the eye of the beholder... and none of them are wrong.