I think I'll go with Darth Vader. Why? Well he was one of the greatest after all. Darth Maul seemed to die to easy (such a shame) when he fought Obi Wan back then. Going by the prompts:
1. Force Powers- Neither used Force lightening or mind tricks really. But Vader was a fan of Force choking while Maul didn't really use Force powers at all, he just fought.
2. Weapons- While a double sided lightsaber is cool as all hell, it did nada for Maul during his climatic battle. Vader was still proficient in using his basic lightsaber even after all that happened.
3. Abilities- Not sure what to say here but I will say that Vader, other than being a well trained Sith Lord like Maul is, was a military leader through and through. He commanded armies both before and after the fall of the Republic was a feared figure everywhere he went. Maul doesn't have much to back him up beyond being a Sith Lord.
4. Dogs- Maul strikes me as an animal lover so I'll give him this category.