jungletoad: I'm someone that thinks the Witcher 2 is one of the greatest role playing games of all time, and even I agree with some of his points. I found the inventory screen to be unnecessarily complicated before I spent a few hours with the game and became accustomed to it. There are a few hackneyed moments in the storytelling, though I overall find it impressive.
I think this is a matter of reviewing a game for not meeting some idealized standard versus reviewing a game in terms of how well it performs in comparison to its peers. I think The Witcher 2 stands well far above most other videogames; however, I think videogames as a whole still have a lot of growing up to do. That doesn't stop The Witcher 2 from being one of the best examples of an RPG though, in my mind.
Crosmando: Are you drunk, TW2 the greatest RPG of all time?
I can't even be bothered to reply fully, but the basic requirement for role-playing is the ability to play a role. You have no choice in TW of who you are, you are always that grey-haired asshole Geralt, you can't name him differently, you can't be another race, you can't customize your appearance.
The decisions you make don't even change the actual personality of your character, they just change the route of the story, so TW is less an RPG and more like an interactive Choose Your Own Adventure novel, it's less like role-playing a character and more like
acting the established one, in this case Geralt.
As for the combat, it's just button mashing.
So it's not proper role playing unless you can play as a lizardman?
Many RPGs give you customization options, but do nothing to provide a sense that your decisions actually matter to the storyline. The Witcher 2's story allows for even your smaller decisions to have consequences to the storyline beyond obvious good-evil distinctions. Choose to drink too much? Well then, you might wake up on the riverside without any clothes on and the majority of your inventory stolen. Don't want to read the books on conducting autopsies? That's your decision, but don't expect to come to the correct decision when you actually conduct one. To me, that's much more important for roleplaying than having a choice between barbarian, valkyrie, and mage. Yes, I'm only playing the role of Geralt, but I'm playing him my way. I make choices in interactions that affect how I'm perceived by others. I decide if I want to focus on magic, alchemy, or swordsmanship.
And the combat is only button mashing if you played it on easy. Try going in unprepared on the hard modes and you'll wish you had a better grasp on parrying, blocking, dodging, and proper alchemic preparation.