The only main difference between GNW Neji and normal Neji is that GNW Neji does Acupuncture with his chase. You can skillbreak normal Neji to also cause Acupuncture with chase. In addition to that you can increase normal Neji's evasion rate. I say 5 star Neji is better. The Skillbreak for his chase is very cheap, only 50 fragments, you should get that easily.