Yes, if Anakin reached his full potential, which Palpatine himself said was TWICE that of himself, then it would have been relatively easy for him to kill Palpatine, which was and IS the whole point of the Sith rule of TWO.
The Force: As the Chosen One, Vader was immensely powerful and had an amazingly strong connection to the Force, stronger than any Force-user ever in existence. He also possessed the potential to according to Obi-Wan Kenboi become the most powerful light and dark side Force-Sensitive being in the history of the galaxy.
It seems that he would only be restricted physically by the mechanics of the suit, rather than anything inhibiting his Force abilities. It seems clear that he didn't reach his peak Force strength, though, judging by how Palpatine was able to dominate him completely in those clashes between them.
However, in terms of raw power and skill, Full Potential Anakin Skywalker may have the advantage, purely because he has access to both the Light and Dark sides of the Force — something that Dark Dimension Vader does not have (due to his overwhelming allegiance to the Dark Side).
Some people say it's because of the injuries he sustained after fighting Obi-Wan, he lost a lot of midi-chlorians and that's why we couldn't find his entire potential in the force. Some people say that the suit limits him.
The short answer is yes, without a doubt, Vader regretted becoming a cybernetic monstrosity.
In Star Wars Legends and Canon, Galen Marek (Starkiller) is the only Jedi (other than Obi-Wan Kenobi) to put a beat down on Darth Vader/Anakin Skywalker.
If he had not burned, Vader could've been stronger, faster, more agile, and continue to perfect his original lightsaber fighting style instead of having to relearn how to fight with a modified Djem So. He would also be able to use Force lightning if he was never burned.
This might be a bit of a controversial pick at just number three, but Darth Vader, perhaps the best-known Dark Side user, is not the most powerful Sith ever. Born Anakin Skywalker, Vader became an extremely powerful Jedi Knight, one who was prophesized to be the "Chosen One" who would bring balance to the Force.
Star Wars fans had better be sitting down, because Darth Vader's comic book just revealed the single greatest feat that the Sith Lord ever achieved - finally tearing down the wall between the living and the dead. Fulfilling the dream that first pulled Anakin Skywalker to Emperor Palpatine's side.
When focusing on the main objectives, Vader Immortal: Episode I is about 52 Mins in length. If you're a gamer that strives to see all aspects of the game, you are likely to spend around 3½ Hours to obtain 100% completion.
Each episode is approximately 5GB; you will need at least 15GB of storage space to install the entire Vader Immortal: A Star Wars VR Series.
Anakin at his full potential was among the Ones in power. More specifically their most powerful member in the Father. Anakin would crush Yoda incredibly easily.
Sidious mastered MUCH more force powers than Vader ever did, like force lightning, force wormhole, spirit transfer, etc. Maybe pre-suit Vader could have given Sidious a challenge, but suit Vader could never have. Also, I think it's fairly obvious that Sidious was the superior duelist to Vader.
Had Vader not been on life support and vulnerable to the powers of his own Force Lightning, he could have demonstrated comparable -- or even more powerful -- Force abilities than Palpatine. The spirit was more than willing. Vader's powers, however, were simply too mighty for his body to handle.
Vader, the only power who overrules him is papa Palpatine.
1 Darth Sidious
As well as being a gifted bladesman Sidious' connection to the Dark Side is extremely powerful, granting Sidious the ability to conduct force lightning. Likewise, Sidious took on both Darth Maul and Darth Vader as his apprentice, two of the most powerful Sith and best villains in all of Star Wars.
As One of the Last Jedi, Kenobi Kept a Low Profile
With the Jedi all but wiped out at the end of Revenge of the Sith, any use of the Force draws the wrong kind of attention. Darth Vader and his Inquisitors can detect the tremors that it entails, which they use to hunt down the last remaining Jedi.
“The tear [on Anakin's face] says that he knows what he's done, but he has now committed himself to a path that he may not agree with… but he is going to go on anyway. It's the one moment that says he's self-aware that he's rationalizing all his behavior.
The reasoning comes from, not only his fears that he isn't strong enough to defeat Vader after 10 years in hiding but the fact that facing Vader means Obi-Wan will have to face up to his greatest failure.
Some time later, he faced the Sith Lord Darth Vader. Infil'a put up a fierce fight against Vader, almost killing him by throwing the already damaged Sith Lord off of a cliff. Despite severe damage to his suit, Vader survived the fall, and repaired himself with parts from Infil'a's droid, Arex.
Yoda will most likely win in a fight against Darth Vader because he is more skilled with a lightsaber and has the experience and feats that allow him to trim whatever size and strength advantage Darth Vader has over him. In fact, Yoda nearly defeated Palpatine, something that Vader could never do.
Is Obi-Wan Kenobi More Powerful than Darth Vader? There just isn't any way that in an even fight Obi-Wan beats Vader. Although Vader is supposed to be one of the strongest force users of all time, we actually haven't had a chance to see him using his full strength very often.