So I've just watched The Seven Deadly Sins the Movie: Prisoners of the Sky, and apparently in it, Mama Hawk sealed
The Six Knights of Black 3000 years ago said that they were as strong as The 10 Commandments.
In the end of the movie, she was also able to eat the attack from
the beast that was, in power only, stronger than The 10 Commandments.
How strong is she really to have been able to seal such monsters? Is it me or is the manga pretty inconsistent about power levels?