Both games have their good and bad points. For plot points K1 definately had more closure to it whereas TSL always left too many questions unanswered, K1 had some annoying characters which, even being annoying as they were, were still fun (I still chuckle at the fact that you can ask Juhani why she keeps spewing trash at you)where TSL on the other hand had much more depth to it's characters and their motivations (though Kreia was still obviously sith), definately some issues in TSL with obvious contradictions (Atris invites you to return to the Telos polar region if you work for her which is impossible given Brianna's refusal to lower the sheilds if she travels with you), K1 definately has better light/dark player controlled options whereas TSL makes some decisions for you based on your alignment (only darksiders can get Hanharr), there are definately better plot twists in K1 (You are Revan is much better than G0-T0 is Goto). For gameplay TSL has better upgradeable items but the influence system gets irritating when trying to squeeze information out of stubborn NPCs, The models for areas and characters are great in both games but the texturing is definately lacking in TSL (The change in quality is best seen in the textures for protocol droids and ithorians), There were definately odd changes to the game's mechanics by Obsidian that weren't really needed (Changes to alien voices) and I definately found reading alien subtitles harder in TSL, the larger modules in TSL are a gift and a curse in that they give more room to play around in but seem to be the cause for frame rate issues. All in all I'd say both games are equall in my opinion.