Originally Posted by Maylander
You seem to be confusing the job of a programmer with the job of a 3D designer/artist. Whether or not a game runs smoothly is primarily up to programmers. Whether or not facial animations are good or not depends on the 3D designers/artists (also on the engine, but talented artists can work wonders even with mediocre engines).
Technical skills will never change whether or not a game looks good, but it will change whether or not it feels buggy or runs smoothly.
NWN2 has quite a few bugs and technical issues, the result of not enough time to even it out because there is such a massive load for the programmers to do when working on a project that big.
PS. Don't kid yourself with the whole "D&D 3" implementation you claim BioWare did for Obisidan. Obsidian no doubt had to start from scratch, due to an upgraded ruleset and overall different mechanics. Their game is no doubt structured differently than the original NWN, so you can't "copy/paste" massive chunks of code between the two and make it work - that'd be more work than just re-writing it.