Bioware didn't make the KOTOR game franchise, or the NWN game franchise. They made 1 KOTOR GAME, and a game does not constitute as a franchise. As for the NWN franchise, that franchise started at least ten years before Bioware made their game, and honestly, are you really saying NWN was better than NWN 2? NWN is the only Bioware game I've played that I've never finished because it was just so bland and uninteresting.
And while I guess that's just my opinion, you're still not being fair anyway. After all, Bioware is an established company, whereas Obsidian has released two games and an expansion. One that was inherently buggy exactly because a Bioware engine was used. The second was the company's first own engine, which has since been fixed and spawned an expansion that has been getting better reviews than any Bioware game ever did. Besides, Bioware had apparently chosen not to use other people's intellectual property anymore (like Star Wars or the Forgotten Realms), and the ONLY other company really qualified to continue these franchises is Obsidian. You should be thankful rather than scornful.
And finally, I would like to say that "I feel it insulting that Bioware makes a great gaming franchise like KOTOR or NWNs, only to handball it to obsidian who even with good intentions never do the original game any justice" is just about the most misleading comment I've ever read, which I feel insulting. You write this in a way where the ONLY instances of this are used as examples of something that has happened dozens of times. And even more, you give your own opinion as fact. Obsidian definately did justice to KOTOR as far as time-constraints and the engine allowed, and none of these matters are Obsidian's fault.