First of all, I understand that the comment in the OP comes from someone associated with Nintendo, NOT with Ubisoft. This isn't a threat, it's a warning, and it's a justified one.
Nonetheless, my own comment directed at most of the conversation in this thread is this:
I think people are a little confused about Nintendo's role in selling third-party games on their system. Let me offer an example: suppose you found out that, say, Terminal Reality (makers of such gems as Kinect Star Wars and TWD: Survival Instinct) was making a new IP for PS4 at launch. How likely would you be to buy it versus Knack, Drive Club, Killzone, etc?
This is how many Nintendo gamers feel when a company called "Ubisoft" (gee, I remember that name! They made Far Cry Vengeance, Raving Rabbids, Nitrobike, Red Steel, Just Dance, and Michael Jackson the Experience for the Wii! Those were some quality titles... LOW quality titles) is on the Wii U at launch with some game you've never heard of called "Assassin's Creed"... and also Rabbids Land, ZombiU, ESPN Sports Connection, Marvel Avengers: Battle for Earth, and the yearly Just Dance installment.
Lots of companies treat Nintendo consoles like this. They neglect them for years, then expect to receive a warm reception when they suddenly show up for the party. When Assassin's Creed III was released on Wii U, it wasn't as though the whole user base had been clamoring for it since the series was created; it was more like none of them had ever even heard of it before, or at least hadn't played it and didn't know what to expect from it. It was as though the game had suddenly appeared from the void. Imagine if a game called Killer Habits 5 was suddenly released on PS3/360, made by a company you recognize as a huge producer of shovelware, and you had never heard of this series before. Are you gonna buy it? Hell no. It is the publisher's duty to market its product, to inform the customers and convince them to purchase their game. Activision can't just put Call of Duty on Wii U and expect it to sell an easy 8 million like it does on other consoles. They built up those sales on PS3/360 with years of consistent, annual, high-quality releases and tons and tons of marketing. They do nothing to market COD on Nintendo systems. COD4, the game that really made the series take off, wasn't released on Wii until 2009, two years too late. Modern Warfare 2 Skipped the console entirely.
You see, Ubisoft (and Activision) have achieved their sales by nurturing their releases on Sony and Microsoft platforms. They have established popularity on those platforms through their own hard work. Now they expect that popularity to simply be waiting for them on Nintendo consoles, or worse, they expect Nintendo to go out of their way to establish that popularity for them so they don't have to do any actual work building brand recognition and TRUST with a new group of customers.
Long story short, if Ubisoft wants their games to sell well on Nintendo consoles, they had better give Nintendo console owners a better reason to buy their games than, "or we won't give you any more games." Because at this stage, most Nintendo gamers don't even know what they would be missing. It's Ubisoft's job to TELL them what they'd be missing, and they're not doing that. They actually got it right with Rayman Legends, offering the Challenge App for free for several months. This built goodwill between Ubisoft and Wii U owners and established that brand recognition and trust I mentioned between them. And that's why Legends appears to be selling better (or at least roughly as well) on Wii U than on two platforms with 20 times its install base.