I'd say she's about equal to Janna, with Janna having the better CC and Nami having more poke and some heal. I still feel Janna is better overall for the same effect. Maybe weaker early game but better late game.
Nami has longer duration hard cc than janna.
23/11/12 Me: WTF Why do you have 6 boots? NoobElise: Aren't I a spider?