I'm guessing they both will be trying to beat each other to launch..Hope both titles don't make the mistake of focusing their efforts on getting to the shelves first
Given the amount of money that both camps have, and the whole point of doing it as a kickstarter is so that the game gets done right without publisher interference, I doubt that will happen.
It's worth bearing in mind that both games won't be considered "finished" at launch anyway. They will be constantly growing, updated, living titles that continue to change because they will be continually worked on. The lack of a publisher means they won't follow the "ship it by a date, abandon it, take the money and run" business model espoused by far too many publishers.