If he decided to fully embrace Morgoth then perhaps. He'd practically be a smaller Valaraukar already. But he wasn't a servent of Morgoth then his ideology would naturally drive him to the ring, which he would be unable to withstand due to his inherent lust for power (as per the code of the Sith) and the manipulative force of Sauron's soul.

So basically, he'd be a pawn for Morgoth one way or another. So no.

Edit: The real question should be if Darth Sidious would win if he was in Middle Earth, as he might posses the means to resist the ring. Then again, he might not, since the only person who could was Tom Bombadil and they are nothing alike.

This is probably being too picky but I'm assuming by him being in the LOTR fantasy that he would be bound by the parameters of that fiction. In LOTR indeed there is magic, and there is battle prowess, but there is no "Force". Assuming that magic is not the same as the Force then his only real abilities are his physical prowess. He would be formidable indeed, but the ultimate power of any Jedi or Sith is from manipulating the Force so he would lose his primary advantage. And on the flip side, if we assume magic and the Force are one and the same then I'd say the powers of other LOTR characters are far more effective then in manipulating the Force then Maul was.