Darth Maul and his apprentice fought Darth Sidious in season 5 of Star Wars: The Clone Wars.

You can watch the fight here if you don't mind spoilers:

As you can clearly see,

Maul and Savage combined still get absolutely owned by Sidious. Based on this evidence, it is safe to say that Maul, while a good fighter, was nothing compared to a true Dark Lord of the Sith.

Darth Maul and his apprentice fought Darth Sidious in season 5 of Star Wars: The Clone Wars.

You can watch the fight here if you don't mind spoilers:

As you can clearly see,

Maul and Savage combined still get absolutely owned by Sidious. Based on this evidence, it is safe to say that Maul, while a very good fighter, was nothing compared to a true Dark Lord of the Sith.

Darth Maul and his apprentice fought Darth Sideous in season 5 of Star Wars: The Clone Wars.

You can watch the fight here if you don't mind spoilers:

As you can clearly see,

Maul and Savage combined still get absolutely owned by Sideous. Based on this evidence, it is safe to say that Maul, while a good fighter, was nothing compared to a true Dark Lord of the Sith.

Darth Maul and his apprentice fought Darth Sidious in season 5 of Star Wars: The Clone Wars.

You can watch the fight here if you don't mind spoilers:

As you can clearly see,

Maul and Savage combined still get absolutely owned by Sidious. Based on this evidence, it is safe to say that Maul, while a good fighter, was nothing compared to a true Dark Lord of the Sith.