I can believe that. If you assemble a lot of actors in a film that's kind of a big acting competition, she wins. I observed this in "Coffee and Cigarettes":
When a movie is broken into a series of vignettes as this one is, critics usually can't resist saying which vignette is the best and grousing that some vignettes are better than others. With an ordinary movie, it doesn't seem worth saying that some scenes are better than others! But with each vignette, you get a new set of two or three actors, so it's hard not to single out, for example, Cate Blanchett. Patty Duke style, she plays two cousins who have the same face, but different hair, clothes, mannerisms, attitudes.
She was utterly fascinating and brilliant.