If you're referring to the Sho/Foy relationship, then I believe that was written by Avellone.
I've yet to fully play Planescape Torment, MCA's alleged magnum opus, and so I only have New Vegas and KOTOR 2 as reference for his writing (and Fallout 2 but that game's voice feels so different from the others that I find it hard to compare).
In New Vegas, I find half of the companions to be annoying (Cass, Arcade, and Veronica to a somewhat lesser extent mainly due to her voice actress (and no I don't find Arcade annoying just cause he gay)), the NCR is comprised almost entirely of cringe dialogue ("Since you haven't pissed yourself I'll assume you don't know who we are - next time I'll bring my sickle and black cloak"
), Caesar is petulant and pretentious, and generally a lot of characters are unlikeable. The Bethesda brand 5 voice actors they grabbed off the street don't help at all. I think people look more fondly on New Vegas's writing because you can ignore the shit you don't like and stick with the cool dudes, IE Mr. House.
Never finished KOTOR 2 but from what I played I just thought Kreia was annoying and retarded. Moral greyness != good writing, especially in a goody two shoes setting like Star Wars. I don't know the Codex consensus on KOTOR 2 but it's Bioware RTwP dogshit with romance so I doubt many people will clash with me on this.
Overall, looks like MCA's lost his touch. I've yet to play an RPG with better dialogue than FO2, and, as I said, it feels completely different from his other games.
That's right, I'm the newest of newfags, which means I'm still content with playing the older, better shit so I don't have to desperately suck up Arkane's backwash like the rest of you retards. Maybe in another 20 years I'll be as sad as you. In the meantime, I'm enjoying my youth!
You sound like a man of standards. I respect that, becoming rare even on the codex. Half as good (or more)? I'd say so. But as good or better? No. It is perhaps worth playing though, if you either cannot find anything else better to play (why?) or are into this style of game.
If you say it's maybe worth playing, then I'll go ahead. After all, it was free!