Anyone seen "the Wrestler"?

Saw it yesterday and loved it. Sure, there’s nothing special or unexpected about the plot, and there must have been a million movies about down-and-out “has beens”. But this one was brilliantly made, and I really hope both Rourke and Tomei get their Oscars.
The question I want to ask though is this: there were 5–6 people sitting together a few rows in front of me, well-dressed, middle-aged people. They looked like critics or maybe some censorship committee or something. They kept standing up, going out, coming back in. This happened several times and in the end they just packed up and left (half-way through the film). They were speaking loudly all the time, and I heard one woman say “this is the worst film I’ve ever seen”.
In what way could you say that this is the “worst” film you’ve ever seen? What was bad about it, for those of you that didn’t like it? How would you rate this film if you were professional critics (like these people seemed to be)?