Super Saiyan Rose > 2 Super saiyan blue users (one of which was holding his own with beerus) he solos everyone
Zamasu is the first villiain in DBZ with a good goal.
-Frieza: His daddy told him he was the strongest in the universe. His daddy game him an army and told him to rule the universe. He's a spoiled brat.
-Androids: They're programmed to kill Goku.
-Cell: The machine told him he can become a perfect being. So he fights to become what the machine told him.
-Buu: He was created to destroy things. He enjoys destroying things.
-Zamasu: He dissaproves human behavior, and thinks the world would be better off without them. He wants to erradicate all of them to accomplish his goal of a world without violence.