Far too early to tell, but I think we can all agree it is good to see two serious competitors in the market! This will make both of them try to constantly improve.

The NuBits whitepaper can be found here https://nubits.com/about/white-paper


The basic idea is that:

The price of NuBits is pressed downward by shareholder elected 'custodians' selling NuBits for $1.

The price of NuBits is pressed upward by anyone who owns NuBits being able to take their NuBits out of circulation (called parking) for a limited time in exchange for a monetary incentive, the incentive amount chosen by shareholders which will reflect how needed parking is at the current time.

Hope this helps.