Re: Strongest Clan ?
Strongest person from the strongest clan is:
Itachi (will be Sasuke once he masters MS)
I like Neji a whole hell of a lot better than Sasuke until he redeems himself and loses his vengence and grows up. Naruto and Sakura did. Either way, if Uchiha existed in more than a couple of people, they would be greater.
However, I don't think Sasuke could wipe them all out alone. With Madara, I think he can.
By the way, I'm pretty sure that the leader of the Hyuuga clan has a strong bias when he says they're the strongest.
Order of Clan Strength:
I think though, that we should consider other clans like the Kaguya that Kimimaro was the lone survivor of with some sort of bone kekkei genkei. Finally, Haku used one-handed jutsu signs and his ice kekkei genkei. That may be for another discussion.