Origin of the phrase "Hyuga are Konoha's strongest"
It was seen first in the Chūnin exam, when Kakashi said this during the battle between Hinata and Neji. That path was followed in the fight between Naruto and Neji. 

The reason is, that the members of the Hyūga can manipulate the chakra of their enemies and thus can win against most ninjas. And since the massacre of the Uchiha-clan, who could be better than the Hyūgas?