I don't think Konami cares, there are mobile games that make that every month for years, that will cost a fraction of a million to create. Getting funded for 5.5 million =/= good sales. I mean, its good that there is a cult following but that was never a question. We all know Castlevania had a cult following.
Sadly for publishers, it doesn't work like kickstarter. You get the set price of your item and thats it. 64,867 backers is nice, but for a publisher thats 65k sales for your game on real paper. We shall see how it does when its out.