I do sort of find it ironic that he holds AC2 over AC1 head but doesn't do the same for the Witcher... (The Witcher had allot of issues at release.)
Witcher 1 was great, IMHO. But, no - it ain't perfect; namely b/c of its combat system. That's...really about it here, TBH.
While W1's combat was different and decent enough, it just ain't even W2's league of combat + isn't as good as many other RPG's. But, W1 isn't just all about the combat - as it's also about the gray decision-making (and making you not reload b/c your decisions have their results show up numerous hours later, in most cases) + how what the "Best choices" morally doesn't always give you the best result; the characters; the story; and all of that stuff.
W2 really just handles combat much better + looks graphically much better, IMHO - that's really about it.
W1 was much better + more complete on story, plot character, and things of that sort. By the end, I was satisfied w/ W1. Can't say the same w/ W2.
W2 had everything going for it story-wise - but then it completely botched the whole story thing in Chapter 3, pretty much setting it up for W3: WH and leaving us with a very weak + anti-climatic finish. And it took them a while to patch-in and add extra slides at the game that has the "alright, y'all complained so we'll make your decisions feel important", since so many complained about the original W2 ending having NONE of that. Also, W2 played horrible w/ KB-mouse upon release, as you couldn't even set keys up to numpad keys - of course, they eventually fixed + patched that up, after people complained about that like crazy. One thing about CDPR, which I do love - they'll listen to gamers and actually go out of their way to improve + fix stuff up.