You've been way to harsh in your review here. The recording has some fine moments and, though it may not be comparable to the stage recordings, you missed the point - it wasn't supposed to be. It's a new interpretation with intimate performances that you wouldn't be able to have onstage. Samantha Barks gives a brilliant performance as Eponine (which is worth stars by itself). Hathaway is fantastic as Fantine and her performance of I Dreamed a Dream matches it's new position in the narrative. If it had been where it is in the stage show (after she gets thrown out of the factory but before Lovely Ladies) I could understand your criticism. But she's just been through a lot, no wonder she's emotionally drained.
You've also criticised Enjolras - completely without foundation. Aaron Tveit is one of the finest singers on Broadway and is admirable here.

I think if you'd not compared it to the stage show you'd have rated it much higher.