User blog comment:Paleomario66/Dragon Ball Super Anime Scaling/@comment-32070640-20171005151640/@comment-30294856-20171005171752

Goku and Vegeta were likely suppressed during the Universe 6 Saga though, since SSJ Vegeta easily defeated Frost and he even stated that he holded back because he didn't want to kill him. That's why Frost was so much weaker than Frieza.