I have to point out, that part about "Nintendo of America's continued insistence that the company has no plans to localize those titles" is INACCURATE. What they actually said was they had "no plans to bring [them] ...at this time". Aside from the obvious "at this time" part, there's another key difference between what you reported and they actually said-- "Bringing" and "localizing" are two very different things. All this source actually confirmed was that there was a localization. And NOA never actually said they weren't still localizing.
I hate to have to rain on everyone's parade, but it should be at least noted that localizing doesn't necessarily indicate plans for a release. Especially in a case like this where NOE had already taken care of 99% the job already. Since an English translation has already been done and paid for by NOE, and NOA could easily throw together a NTSC build with very little expense. In fact, would be dumb not their part not to have one already prepared in the event if the games sell well enough in Europe to make them reconsider. It could also be handy to already have one ready for a third party to buy the rights to publish.
There's plenty of reasons to make a localization and just sit on it. So, we shouldn't assume this means anything. Nevertheless, I still am confident we will see a release for Xenoblade unless it's a total bomb in Europe.