Let's not forget that Platinum straight up said that Bayonetta 2 "would not exist without Nintendo".

It's not like the game was going to come out on Playstation/Xbox until evil Nintendo stepped in and stole it. It was a choice between Bayonetta 2 on Nintendo or no Bayonetta 2 at all. Thankfully, the former happened, and the result was a great game.

It's probable that Bayonetta 3 is likewise being funded by Nintendo and might never have existed otherwise.

And stay in Japan, Capcom really care about gamers in the West because it perhaps is too violent to them, keep children safe

It's all down to the publisher, since Platinum's games are funded by others; such as Square Enix in the case of Nier. Sega didn't want to stick their neck out on Bayo 2, so Nintendo stepped in and footed the bill in exchange for exclusivity. Granted, we don't know what the situation was regarding Bayo 3, so we can only make educated guesses at the moment. But the series doesn't have a great track record as a moneymaker, so it may not seem an appealing investment to a third party publisher. To a first party looking for an exclusive to diversify their library and earn critical acclaim, however...

Bayonetta 3 would not exist if Bayonetta 2 didn't exist. And I don't mean that by the numbering, I mean that by if Bayonetta 2 didn't exist, there is no way that Sega would decide to make a sequel that didn't sell that well of a 10 year old game. Platinum would find no publisher today wnating to make a sequel for a game that released in 2009.

Bayonetta 1 released in 2009. It didn't sell well. Nier selling well would just mean a sequel to Nier, not making a sequel to a 10 year old game. 

Bayonetta even being a franchise people know right now is due to 2 and her inclusion in Smash. NieR selling well just lets Sega/Nintendo/Platinum or whoever is pulling strings know that the genre has potential. 

Is Bayonetta gonna light the charts on fire? No, probably not. But it's what I would call a calculated expense on Nintendo's part. They make make some money, break even or lose some money on it. Either way I think they are fine. Obviously they woudl want it to be a huge hit, but regardless of its sales its a game type that applies to a different demographic than their own games. It makes their library look more complete to draw more consumers. Nintendo knows it will make a killing on their core games, Mario, Zelda, ect. Bayonetta is not there to make them a billion dollars. 

Sega has nothing to do with Nier.

So do I. Can't stand that giant hat design.

I still disagree, not with your point youre trying to make just the facts. Owning a PC capable to game doesnt equal a PC gamer who buys all his multiplats on PC.

Thats not true even if you remove the PS3 numbers in Japan PS3 still has higher sales for Bayonetta 1

well well well.. that´s really good news!
Now, Nintendo.... what about helping Platinum finish Scalebound too?

This! xD 

Possibly.  And if they aren't, the Switch port will make them happy, as all the games will sell well there.