It looks to me as if there may be a slight edge in favor of W-E for the NT. That said it seems to not be that pronounced or reliable to use it as a primary criteria when picking direction of travel.
BTW, I am of the opinion that there is a definite advantage of E-W on the TA wind wise, but again other factors are likely to be more important.
It isn't like the difference direction of travel makes on either is as big as it is on the pacific coast highway.
Personally, I like to ride toward home. I like to have air travel out of the way in the beginning. I like to have friends or family to meet at the end. I like that starting far away makes it harder to wimp out. I think things like that are bigger factors for both the TA and the NT.