Definitely some fair points in there so let me address them.
I would length of unnatural life and rule implies more power but does not equate it no. In fairness I see it as part of the whole bit Bioware seems to be going with him. Palpatine wants to rule the galaxy, Tenebrae wants to eat it. There is also the whole apotheosis bit. Tenebrae is trying to become a god. It sure seems like Bioware is trying to make the stronger Sith.
Also, as someone else pointed out, by making all the Sith Empire's stuff look a lot like the Galactic Empire's stuff and having the some of the Sith dress like Sidious, it actually makes Palpatine look like he was imitating them. Bioware really makes it look like Palpatine is trying not to be Bane or Qel-Droma but Tenebrae. Which is funny because the game is actually imitating the movies. But since it comes first timeline-wise...
I do not think he makes it to Bane, unless they do a major retcon. I was using hyperbole there.
On the foresight bit, btw I was always of the opinion that Palpatine was not as good at it as he made it out to be. I know when I saw ROTJ way back when I saw it as part of his tricks. Oh he had some of it but nothing overwhelming. He got glimpses like everyone else. He just played that he knew everything.
That was the old days, back when we thought Vader was way more powerful but Palpatine was keeping him in check through more trickery and cunning. Palpatine was not a super-sith, he just very manipulative and very smart. Ah well, EU & Lucas disagreed and here we are.
The reality is that Bioware was trying to make a bigger badder Palpatine. EU writers and novelization writers already made him the Sith above all Sith. The jury is still out because times are a changing. The Mouse ultimately is in the driver seat now.
PS Speaking of Scrouge. They definitely went for parallels there didn't they.