All I see in Jade Empire's dialogue are typical, clumsy kunfu filmesque writing with worn out descriptions and sometimes silly pathos. It is like badly handed homage bordering parody occasionally. Heck, even KotOR I had better.
At best JE's dialogues were average, but dialogue options themselves were always absolutely horrendous. Don't get me wrong - its still better than 90 % of games out there which is rather sad - it's ok enough but it has no brilliance.
Kreia alone is better than all writing in JE combined.
And from what I've heard Bio hasn't made any progress in ME in that department, in fact NPC's sound boring - at least Jade Empire had that demon possessed girl which was great and Your Random Amazon Woman 1902 Silk Fox