I think it's unfair to say that you could "see" Julie Christie. As Besty pointed out, her performance was so internal. The reason I thought Christie deserved the award over Cotillard is the same reason I didn't think Mirren should have won last year, physical performances that heavily rely on make-up and impressions to impersonate and act like a historic figure. Just my personal opinion.
Yes, I am aware that it's more than "impersonation" and whatnot, but I just feel that what Christie did, creating this character from scratch, and nailing every gesture, look, and line was more deserving.
Yet, one can't say that Cotillard's award was undeserved, her performance was indeed thrilling and I bought her as a confused teenager, bought her as a love-struck woman, and as a sick older artist. I am looking forward to seeing a lot more from her... will NINE come out already?
"Some people can thrive and bloom living life in a living room, that's perfect for some people of one hundred and five. But I at least gotta try, when I think of all the sights that I gotta see, all the places I gotta play, all the things that I gotta be at"