Out of curiosity, how many games would it take for it to be worth buying the console?

Indeed. We know it's no where near making a profit, but it sold well enough that they're pleased with the buzz is generated.

I dunno if its a "big" success, but if Platinum is pleased with the game's performance then that's really the most important thing. Nintendo needs good relationships with 3rd party developers, so seeing this deal work out well for Platinum & Nintendo is great.

Well it's certainly critically successful, and at this rate it should hit 1m lifetime on Wii U, so yeah given the circumstances, successful game by far

So you don't have any console?

There are different shades of success. A critical success (which it is), a commercial success (which I am much less sure of), etc. The language used is not definitive and doesn't exactly say it is the latter (sales). "Warmly welcomed" is vage and could mean different things, but I'm inclined to think it's not sales related, so that's a different kind of success for them.

I asked what you would consider a commercial success for the game.

No, you did not. You mean you meant to ask that - which is fine. You asked what is success. Clearly a much broader question. Now you're asking something much more defined ....

No mention of success.

Which you are dodging. Sure it was my original intention to ask that. I was merely asking your opinion. Usually when everyone is talking about something, asking how it is defined means you are curious about what the subject means. Try putting the original question into context. 

See here? I was pointing toward that last and first bit of your sentence. Where it is bolded.