I fully agree with this, and as a somewhat hardcore player (with > 175 hours each in DS1 and DS2) I also think DS2 is the best Souls game in terms of gameplay overall. (Of course, I also think DeS is immensely overrated)This I'll never understand. All the other criticisms about gameplay in DSII, ok, I'm not going to say much. I still liked it a lot, but I know the more hardcore players are more picky about things than I am.
But bland graphics? Naw. The graphics and art style and locations were superb for the most part. There were some areas that weren't very inspired, but you could say the same about Dark Souls 1 and Demons Souls as well, but people are always reluctant to criticize those games nowadays, acting as if they are flawless or something. Overall, I think I was far more impressed with the visual design and variety in DSII than in either of the previous games.
In any case, that it's great looking visually should be obvious to everyone.