It depends on the amount of secondary stats. You get 3 extra points with 2 stats, 2 extra points with 3 stats and 1 extra point with 4 stats. This is base on my FC members Nexuses (7 so far).

Here are my stats:

Curtana Novus >> Nexus
31 Parry, 22 Accuracy >> 33 Parry, 23 Accuracy


Holy Shield Novus >> Holy Shield Nexus
9 Accuracy, 13 Parry >> 9 Accuracy, 13 Parry