Divinity is not necessarily a level of magnitude, simply a classification. Physical powers, Mental Powers, Magic Powers and Spiritual powers. MythPowers would go under spiritual.
They allow powers that their respective deities possess, but naturally not ALL of said powers, and not anywhere NEAR the same level.
“…Judge not what a man has done, but judge what he could have done if he was a different bloke altogether. For art thou a leper? And a leper can changeth his spots…” --Rudy Wade, Misfits (Series 4, Episode 8)