No, it isn't. They have lots of weird tech the Republic and the Sith don't have, but it's not once argued they were as a whole greater than the Republic or the Empire.
TOR exists, and always has existed, with Legends in mind.
The context of these quotes heavily imply, the Rakata handled a being, which the sith or Republic couldn't. Hence why there are multiply quotes of Soa being a threat towards the Galaxy.
Registered: Aug 2014
Location: The balance of the Force
All I need to 'prove' is that they couldn't kill him without causing his own pylons to backfire on him and kill him that way. Essentially killing himself.
He used Korriban as the proverbial crown in his empire.
Except it was an army of the ancients. The Rakata couldn't tackle him themselves, they went and got Gree and whatever the fvck else they could ally with to bring him down. Let's not pretend this was an army of fodder when the most advanced civilisations we know of are taking part.
The Rakata took prisoners to experiment on, exactly what do you imagine they could gleam from Soa. A Rakata.
Except it's not that the Rakata pylons holding him in stasis could kill him, it's him drawing energy from them and using that as a means of killing him.
I also notice you've yet to explain how World Razer doesn't factor in to all this. Nevermind that Soa's a galactic tier threat.
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Within your furnace heart, you burn in your own flame. This is how it feels to be Anakin Skywalker.