It's tough. Scourge has his experience and was pretty strong in Revan, all things considered.
Then again, the Wrath has some things backing him up, He defeated Master Yonlach, and his greatest saber student at the same time, while his/her companion was mind tricked into not helping.
Beat Overseer Tremel when he was just an acolyte, something which amazed Tremel enough for him to be amazed at how much power the Wrath had, for that time.
Beat Lord Rathari, who was feared enough that the Dark Council basically let him have Nar Shaddaa, and did enough impact for Rathari to offer to pledge himself to him, claiming him to be the future of the Sith, if I recall that correctly.
Defeated Nomen Karr, and beat him again after he went into a DS-fueled rage. Then went and defeated Jaesa Willsaam afterwards, comfortably.
They managed to defeat Darth Vengean, along with the help of Lord Draagh, though Draagh got locked out of the last half of the fight and even admits that the Wrath did most of the work.
They managed to defeat Draagh after he was cybernetically upgraded and made stronger.
They beat Sel Makor when he possessed the Voice of the Emperor, who was strong enough to stop the Emperor from commiting suicide, not to mention was strong enough to completetly corrupt an area of Voss, leaving it tainted with the Dark Side.
Scourge became more powerful in advanced stage of his story arc, as Emperor's Wrath. In addition, he also accumulated lot of combat experience during the period of 3 centuries.
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B/W Emperor's Wrath 2 is remarkably powerful indeed.
It'd be a really really good fight. Wrath is ridiculous though. The casual killing of Tremel and the butchering of the beast in Ragnos' tomb are great accomplishments for a neophyte.
Yeah, I definitely think the Wrath would win, hehehe.
I'm also unsure. It seems to me that the Second Wrath is a lot more explored, but that Scourge has extremely good hype. Wrath no2 was only explicitly shown as above the Dark Council at the end of the storyline, while Scourge seems to have effectively policed them for centuries. And the Baras fight was very close for No2. But he has a lot more good feats, while Scourge is all accolades and logical powerscaling.
300 years before his peak. At the time Revan sensed that he still had tremendous potential and in 300 years he'd grow a lot more skilled. Plus he was amped by Vitiate.
I actually think the 2nd Wrath has a good chance of taking this. Although Scourge has good accolades [killing more than 1,000 Sith and Jedi, etc.], Wrath2 has good feats and is described to be incredibly skilled with a lightsaber and as being impressive with TK. Scourge doesn't really have any feats to his name.
I'd say 300 years of fighting and butchering Jedi and Sith while learning at Vitiate's feet is pretty impressive, even if your potential is minimal (which in Scourge's case it is not). In the novel, he certainly struck me as a thinker, able to improvise, and powerful in his own right. I have yet to see him in TOR, but if anything he should be an epic fight for any master swordsman, if only by his virtue of a headpiece and experience.