How well would Maul work with the TPM team? He uses Juyo and a doublebladed lightsaber, a form and weapon the jedi would not be used to fighting alongside. Also, Maul considers jedi to be below his skills. I doubt he would in tandem with the TPM team if he thinks he could take out RotS Kenobi by himself.
Teams are sometimes less than the sum of their parts. It happened in the Lumiya and Alema vs Tresina Lobi duel. It happened in Zannah's fight with the 2 jedi in RoT. Even when the teammates involved are great at group fighting a skilled adversary can maneuver so that they get in each other's way (like the RotS Dooku duel)