Alright, so after going through this, I still don't think it's a fake ad (though it could be possible). I think it's actually just the google algorithm, like I've talked about before.
I think that
Gentlepanda
found a pretty good way that a troller-faker could've put in a fake ad that redirects to nintendo, but there's a couple possible problems with that too. It entirely depends at which point google would shut down ads that infringe on the policies. If Nintendo doesn't allow people to link with their domain at all, then even a redirect would get detected at some point or other by google and get shut down.
After Ryce's comments, I thought maybe the url was bad or it had a bad redirect and could show that it's fake, but after looking the urls myself, I can see that the ad uses nintendo's proper domain without the sub-domain format that the western one uses, and even if the url on the ad isn't working, it directs to europe's fighter pass page and it's on the nintendo domain, which means that it's not necessarily a fake ad, since it could alll check out. The only case it could be one is if google took a while to catch it.
Now here's where it gets interesting. The specific ads with the characters not working anymore. There's actually a lot of possibilities for this. I'm going to talk about the ones going against the ad. If it's fake, it could be one of two things; google took it down for infringing on the policies (which it would have if it was fake), and the other yes could simply be that the budget ran out, and that would work if people were still able to get the ad to work with the characters after the 'black out'.
Was it a black out or has anyone gotten it to work at all? I just tried with a vpn and i cant get it to work at all.
Personally, I think it's actually having to do with the algorithm, and that it isn't a fake ad. If you watch papageno's video, they were able to get the ad to come up with other words that one way or another tied to 'dlc'. Not all, but some, which goes in favor that it's complicated and not just everything tied to dlc brought it up.
I saved the video at 13:20 to see what I'm talking about. He shows some of the words they tried.
Not only is it a couple of dlc from other games, but the dark souls dlc is actually called Artorias of the Abyss, which would explain why it came up for artorias.
Showing that it most likely has to do with the algorithm, nothing more.
The west didn't get anything around these characters, so that tells me that maybe europe's department didn't use their google ads tools correctly compared to other places, among other possibilities.
I think it's also possible that they refined it after they saw that they were getting hits in ways that they shouldn't, which is something that can happen, and it's normal to refine it, including adding negative keywords to stop getting those hits.
And that's my take on it