I certainly do NOT understand the (6.1) user rating for this movie!

Rating: 8/10 (10 May 2010)

I just watched the Shrek trilogy. I was expecting this third one to be awful based on the IMDb rating but I was shocked to discover that I actually liked the film. In fact, in my opinion, the 1st Shrek is the 'worst' one out of the three- with sub-par graphics, less of a story line compared to these two (taking the time and tech developments at the time into consideration.
(Shrek the 2nd is the best one out of the three, but none of them can compare to any of Pixar's gems.)
I just wanted to express that I find the rating for this installment unbelievable, and would love it if some users could actually clarify their rating and give valid reason(s) for it.