What is the primary principle of controlling Jinchuuriki?
Bijuu control can be achieved in 2 ways.


My (Madara Uchiha's) way, by force.
By earning the respect of the Tailed Beast in question.


In the past, when Madara battled Hashirama at the Valley of the End, he summoned and controlled the Nine Tails with the power of genjutsu, using the Sharingan.


   Naruto and Killerbee however, earned their respective Tailed Beast trust. The Tailed Beasts are ancient beings, very bitter about constantly being sealed and used by humans. They developed a deep resentment to humans. Naruto and Killerbee, by not succumbing with those powerful negative emotions, and showing their desire to work with, not against their Tailed Beast, have earned their respect, and achieved a whole new level of power.


The second method is by far stronger than the first.