Well, sometimes, I love Cosette more than Eponine... sometimes. I love Eponine as well, she's actually really interesting when she's not whining after Marius. I mean, she's educated, and I'm sure she's a feminist (just listen to the lyric where she says: "I could have been a student...")
She's educated? Erm.... hve you read Victor Hugo's book? She is illiterate and she only knows where people live because her parents sent her out to ask for money as a child. The movie glorifies her character even more than the play, whereas in the original work, Eponine is very clearly NOT some feminist or revolutionary, she is literally just a girl on the street.