In view of their wealth, and the seriousness with which they both took themselves, they brought their case before the great rabbi, the Noda B'Yehuda. They both apportioned a large sum to be given to the rabbi for judging the case. Thus it was with Pharaoh. Peace is the uniting of opposites. He who makes peace in His High Places.
Water extinguishes fire.
However Hashem makes peace between fire and water and unites them in unity. That quality, that quantity of uniting opposites is the quality of Yosef Hatzadik. For Yosef unites the two opposites - Kindness and Judgment. The exquisite balance. On the one hand, there is Yosef who dominates and rules in judgment.