Board Thread:Questions and Answers/@comment-154.66.137.72-20200720020511

In the anime, it is said that as a demon, and leader of the Ten Commanments, Meliodas was powerful enough to overthrow and bcome the Demon King. This obviously being true shows that he was once one if not the most powerful being in exsistance. When he left and became the leader of the seven deadly sins, Merlin had to take away most of his power because he couldn't keep his wrath under control and vapourised Danafall. Later in the anime he got his full power back by passing a test to wipe out his emotions, since he got his power back and is now at full power this means he could've beat the demon king with no problem. My question is is he got his full power back, why does he have trouble fighting the Ten Commandments? My guess was that his emotions got in the way, but his demon form obviously cancel's that conundrum, so what could it have been? 