ehm, what’s to look up? you’re spouting off a bunch of made-up head-canon.
there have been -two- “true” ragnarok 2’s, and this is neither of them. the first (RO2: The Gate of the World) was a complete flop. the other (RO2: Legend of the Second) was/is a mediocre entry in the light-challenge MMORPG category.
Torchlight is certainly in the same genre as D2… but the style is entirely different. (like comparing WoW and ToS.) having played all of the games involved (Diablo 1,2,3 and Torchlight 1,2) i would never consider Torchlight to be a sequel to Diablo.
it would be like suggesting that Doom, Hexen, Quake, and Castle Wolfenstein are all sequels to each other, because not only are they made by the same company, but they’re all FPS games too – it’s simply ridiculous. the games aren’t related to each other in any way other than having some of the same people work on them.
you might prefer one thing over another, but that doesn’t give you license to rewrite history to fit your random fantasies.