Legendary battle (Trio versus Trio)

Team 1

1. Nyriss*
2. Scourge (Emperor's Wrath)*
3. Praven*

*Elite duelist; very powerful in the ways of the Force; Dark Council Member; Sith Sorcerer (advanced); very impressive combat record (easily defeated the duo of Scourge (normal) & Meetra simultaneously)

*Elite duelist; very powerful in the ways of the Force; immortal condition; mind-boggling combat record (over 1100 Jedi/Sith kills)

*Elite duelist; very powerful in the ways of the Force; very impressive combat record (defeated some of the Jedi Order's finest; blitzed multiple opponents simultaneously)

Team 2

1. Maul (CW)
2. Opress (CW)
3. Ventress (CW)

Team 2 is well-known.

hmm, interesting battle you have assembled. Team 2 can win, but the weak link is opress. Nyriss could hurtle lightning at him, and he has no knowledge of defending against it. Scourge could most likely take on Maul (for some time), and Praven can take on ventress (for some time), and Nyriss unleashes a force storm to kill them all 😉

Nyriss beats Maul, Scourge beats Opress and Ventress beats Praven.

When did Praven blitz multiple opponents?

^^^

That is an in-game event, I believe.

Praven has also defeated one of the order's most celebrated lightsaber duelists during sacking of coruscant.

^^^

Yes!

A Sith pureblood, Lord Praven has trained in the ways of the Force since the earliest years of his youth. Fiercely loyal to the Emperor and an ardent believer in the philosophical teachings of the dark side, Praven is surprisingly calm and collected in his speech and actions. He follows a strict code of personal honor, and unlike many other Sith, he eschews random acts of cruelty and sadism. Despite this, he is sworn to destroy the Jedi and considers them his mortal enemies. During the Sacking of Coruscant, Lord Praven killed Master Usma–one of the Jedi's most famous duelists–in an epic battle. But he spared Usma's young Padawan, telling her to seek him out once she had finished her training so they could face each other as equals. When she tracked him down years later, he honored his promise, sending her to the same fate as her Master.

Source: Codex entries of SWTOR

Praven also defeated Jedi Master Kiwiiks (SWTOR implies that only an individual of considerable power/strength could pull this feat off).

IMO, Nyriss can defeat any of Team 2 and Scourge (despite likely being more powerful than her imo) can at least challenge all of them and stalemate them. The weak link is Praven, since despite Legends claims he's got very little to his name. He beat a master swordsman and Kiwiks but that's about it. He's about Council level, which is still below anyone else on the team imo. I don't think he's thoroughly outclassed, but he is outclassed.

Going by my above scenario Nyriss beats Maul, since she thoroughly owned Meetra Surik who I have established already as being a complete badass in canon. Scourge will beat Opress, since Opress has a weakness against a) lightning and b) h2h and Scourge is able to envelop his fists with lightning to devastate Opress. He's also just much more skilled. Praven loses to Ventress at about the same time Scourge beats Opress and he then beats her or Nyriss finishes off Maul and a threesome emerges.

True, Ventress has also defeated master swordsmen, and has much more impressive feats than Praven, but I think he is more than capable of holding off ventress for substantial amount of time, enough time for say, Nyriss, to come and just own her.

Praven is decent in the use of the Force as well; he is proficient in the use of Force lightning, Telekinetic applications and can also unleash energies (in the form of balls of fire which explode on impact) with bare hands.

Sure.

In gameplay.

yeah that's true, the only canonical ability he has used is the saber throw technique.

TOR.

TOR. Praven may take Ventress.

Nyriss vs Maul

Maul has pretty good resistance against lightning and his TK from his 2vs2 with Opress, Kenobi, and Gallia was pretty impressive. Kenobi was schooling Maul and Oppress in sabers, but Maul overpowered Kenobi with TK multiple times in that fight. He then flung a ship at the pirates that were chasing him when he was retreating.

So I think force wise, Maul and Nyriss are comparable.

Saberwise, Maul's only feat I can think of off the top of my head is killing Qui-Gon. I think the Exile is at least at Shaak Ti's level, so beating the Exile and Scourge in sabers is more impressive than any saber feat I can think of that Maul has done.

Overall, I think Nyriss would beat Maul.

I know Opress has killed Jedi masters and stuff, but he comes off kind of amateurish to me. I think Scourge outclasses him.

No clue who Praven is, so I'll default to Ventress. But Ventress won't be enough against Nyriss and Scourge.

Team 1 wins in my mind.

I think replacing Nyriss or Scourge with someone weaker or replacing Oppress or Ventress with someone stronger would make this battle more even.

This fight is already pretty good, I'd say.