@TehSDragon
An...apt enough comparison I suppose, but I suggest you look at Wuxia MCs as being similar to the Knights or Paladins in European Legends of the Knights of the Round Table or Charlemagne's Twelve Paladins and other such heroic figures whose actions are informed by a Code of Conduct. While Xianxia MCs are your average DnD Player Character, they can be heroic people yes, but they can just as easily and quickly switch to being soul-less murderbots interested only in the final prize and strength.
As for Wuxia and Xianxia, it's kind of like how Rock'n'Roll or Hip Hop grew from the Blues. There are definite connections if you know what you're looking for, but they are not the same or even in the same genre. That's how I think the two are related to each other, but again, I am uncertain because I haven't made a serious study of this or am all that knowledgeable of the culture behind the two.
As for examples, Tales of Demons and Gods is most DEFINITELY Xianxia, Feng Shen Ji I do not know, but from what I've read up on it (tried reading it, doesn't catch my attention at all funnily enough) it seems to tick the Wuxia boxes. Douluo Dalu, I am uncertain of, but a number of reviews I've have put it as Xianxia.
About examples of either, note that this is only the stuff I've read or watched I feel are worth recommending, but your miles may vary tremendously:
> Wuxia: Jade Empire (Bioware Game), Reign of Assassins (Movie), Jin Yong (Author)
> Xianxia: Cultivation Chat Group (Comedic Take on the Genre)