I actually thought the translator did a pretty good job (not to say that I can read Chinese or do a direct comparison). My only complaint was that I wish they'd westernized the names--they all sound too similar to my American ears.
I felt the translation felt very awkward at times. Just scanning some articles about Ken Liu, it was his decision to try and stick to the original literary style, I think a lot of it came from that.
In a lot of ways I liked it because the entire thinking behind the book was a different cultural thinking.
But the resulting style is definitely a bit awkward in English and sometimes it was a little bit of a slog.
