Ugh - I would have complained a TON if I'd had to play the first as a hard-coded prerequisite for the second. Also, I wouldn't have finished until next September. ;)
As for the recap/tutorial question, I can't speak for other reviewers, but my position was that if I needed to play the first as part of my review for the second game, then it wouldn't really be a review of the second game. It'd be a review of both games. When writing a review, I need to try to rate the game on its own merits, regardless of what may be available outside of that game that would enhance the experience. Sometimes a tougher challenge than others. I also felt like even those who played WKC1 might have appreciated a recap if it had been a while since they played the first one.
Not trying to be defensive at all there - just thought your comment was a valid one that deserved a response.