I think most people would agree Vader reached his prime after Kenobi died.
When he was still alive, canon sources have them as being equals in power (insider #214).
Had Kenobi survived beyond ANH, it would be interesting to see if Kenobi could continue to keep up with Vader. Since we'll never know, Vader wins by default and has my vote.
sources are often time unreliable and are more useful as toilet paper. Several sources have Vader as the strongest Sith, and for many years we had him pretty close to Sidious, until h was stomped no diff by Sid
Context. Vader was significantly weakened when Palpatine stomped him. Palpatine specifically pointed this out beforehand. Not only that but Vader wasn’t really fighting back, and he was fighting a couple Royal guards at the same time.
Any time you have a fictional universe as large as Star Wars, you're bound to have contradictions in its lore. It's simply the nature of the beast. What's canon today isn't necessarily canon tomorrow. Star Wars will forever be changing and evolving.
That being said, where canon stands now, obi-wan and Vader are equals in power by the end of the Kenobi show, and heavily implied they were (roughly) equals in ANH. Most sources point to Vader being at his peak in rotj, implying he's evolved beyond his ANH version, which also means he scales beyond Kenobi too. Vader wins.
Pre-suited, prime Vader takes this. Obi-Wan won their duel, but still Vader was stronger, better and would take a solid majority over Kenobi in other scenarios.
Suited Vader might be better in terms of using the Force, yet he's inferior duelist to his pre-suited self. And to Kenobi as well. And I don't believe in this bullshit, that he was on overall same level per 20+ years, and then jumped in power considerable only to be stomped by Sidious.
Ah, I shouldn't forget that Vader is terribly hindered in any fight that he looses, God, what a bullshit xD
Yeah good point. Because I’m pretty much going by what sidous said in the series ie Vader being weakened hence Obi sort of getting the edge .. because if they were even I think sidous would be going after Obi.. but yeah mate just my opinion .. and obviously Vaders powers grew more later..