The point behind the kickstarter is that they don't have the funds to pay all the staff and [parasitic bomb] to make Mighty No. 9. Inafune and Comcept is basically an indie publisher. he has whatever money he has saved up and invested into his company, which is no doubt a small amount compared to the kind of money Capcom has amassed.
This kickstarter allows him to fund his game with fan support. It's crowd sourcing. You pay a minimum of 20 bucks, you get the game, and your money goes towards the development of the game. Anything beyond that nets you bonuses and collectibles and such, and the money goes towards the development.
It's basically a reverse sales system. instead of fronting the cost up front and then hoping the sales of the game make back their production cost and more, so as to have been successful, this way, you make back the production cost up front, and then distribute the game. Any bonus money that comes in from the game once it is released, goes toward the game's success.
Right now, Mighty No. 9 is fully funded. people have essentially bought the game, and the production cost has been made back before the game is even made. so they are putting bonus money towards more features in the game.
Once the game is released, they dont need to worry about making back their cost. any money gained, as I said before, is just extra money rolling in from a game that's already had it's cost paid.