__________________ "Happiness is a lie. Life is horror. The light is always dying all across the universe. The last star will flicker out someday, when it does, all that remains is shadow. And I will be its king!"'-Amahl Farouk
Yes he beat a physically wrecked Kenobi after using dun moch, something he's never used on kenobi successfully except for when Kenobi was already physically wrecked beforehand.
Lets forget how kenobi took maul out twice in the first minute, retrieved his saber from maul, drove maul back, slammed maul's blade to the ground and took a second to recover from a flurry of kicks maul landed despite being kod two times before the fight because maul was able to "outmatch" kenobi when he exploited circumstances that aren't present here.
Since we're ignoring Kenobi's circumstantially induced physical/mental state, might as well ignore maul was rusty and agree that since Kenobi had maul at his mercy twice and maul was only still kicking because of ventress/oppress, Kenobi clearly wrecks maul from round 2 and onwards
Since we're just ignoring external factors/context lets also remember how tpm kenobi cut maul in half and agree tpm kenobi could beat maul too.
^ Whoaa someone's butt hurt about Maul's win in that episode.
For all your excuses Maul was the one who hadn't been in a Saber duel (or any kind of serious Saber action) in 10+years. Maul was the one who was using 2 humanoid legs for the first time in 10+ years also.
So I understand Maul not fighting on par with Kenobi right from the outset. And give him full credit for beating Kenobi up as that fight went on.