So could it be that NAV coin and Monero one day be rivals? What does Monero have that NAV coin doesn't? I've been doing some reading and couldn't find any big difference between the two.
Different cookies,
XMR is based in cryptonote
NAV in Bitcoin Core
NAV is PoS (5% interest per year) vs XMR that is PoW
Since NAV is based in Core, it's easier to escalate. NAV also has Anon as an extra feature so users can choose if they send anon or not.
Since NAV activated SegWit now they will be moving into building on top of that Anon Dapps.
Also they are working in a fork of Copay so soon you will be able to send anon from mobile..