Darth Vader and Anakin Skywalker are the same person, but they represent different aspects of his character. Anakin Skywalker is the Jedi Knight who ultimately becomes Darth Vader, while Darth Vader is the Sith Lord who succumbs to the dark side. Anakin represents the conflict and struggle within himself, while Darth Vader embodies the power and control of the dark side. Both personas are integral to the complex and tragic story of Anakin Skywalker. **

Yes, Darth Revan did fight against Darth Nihilus. In the video game "Star Wars: Knights of the Old Republic II - The Sith Lords," Revan and Nihilus are both prominent characters. They come into conflict as part of the game's storyline, with Revan ultimately facing off against Nihilus in a climactic battle. Their confrontation is a significant moment in the game's narrative and adds to the lore of the Star Wars universe. **

According to canon, Darth Sidious is considered to be stronger than Darth Vader. As the Dark Lord of the Sith, Sidious was a master of the dark side of the Force and was able to manipulate and control it to a greater extent than Vader. Sidious was also able to defeat Vader in combat and ultimately overpowered him, solidifying his position as the more powerful Sith Lord. **

Darth Nihilus is a character in the Star Wars expanded universe, specifically in the video game "Star Wars: Knights of the Old Republic II – The Sith Lords." He is a Sith Lord who is known for his insatiable hunger for the Force, which led him to consume entire planets and their inhabitants. Nihilus is depicted as a dark and enigmatic figure, shrouded in a tattered robe and a mask that hides his true appearance. His power and presence make him a formidable and terrifying antagonist in the Star Wars universe. **

Darth Vader's armor does provide him with physical strength and protection, but his true power lies in his connection to the Force. Even without his armor, Vader's mastery of the dark side and his skills as a Sith Lord would still make him a formidable opponent. However, Darth Sidious is considered one of the most powerful Sith Lords in history, so it is likely that he would still be more powerful than Vader even without his armor. **

It is difficult to determine a clear winner between Batman and Darth Vader as they come from different universes with different abilities and technologies. Batman is a highly skilled martial artist and strategist, while Darth Vader is a powerful Sith Lord with the Force at his disposal. Ultimately, the outcome of a battle between the two would depend on the specific circumstances and environment in which they are pitted against each other. **

It is difficult to determine a clear winner between Darth Sidious and Naruto as they come from different fictional universes with their own unique powers and abilities. Darth Sidious is a powerful Sith Lord with mastery over the dark side of the Force, while Naruto is a skilled ninja with access to various powerful techniques and forms. Ultimately, the outcome of a battle between them would depend on the specific circumstances and the context of the fight. Both characters have their own strengths and weaknesses, making it challenging to predict a definitive winner. **

It is difficult to determine a clear winner between Darth Vader and Voldemort as they come from different fictional universes with their own set of powers and abilities. Darth Vader is a skilled lightsaber duelist and has the power of the Force, while Voldemort is a powerful wizard with a wide range of magical abilities. Ultimately, the outcome of a battle between them would depend on the specific circumstances and the environment in which they are fighting. **