No, not really. The market will have to decide for a winner between the two. I think potential regulation, government crackdown would be the main things to look out for. Besides that, the only thing to stop Bitcoin could be Bitcoin itself and I mean the 'squabbling ' between all those groups deciding on Bitcoin's future. In the end the reason that 'Bitcoin' is 'KING', is really because it effectively is the most popular brand and most accessible among crypto currencies. Time will tell... :-)