This is NOT a sushi buffet. Yes they had sushi available but if you consider yourself a sushi fanatic you will be let down. It was very average selection and nothing special from the sushi section.
That being said, the chinese food they had was very good. Speaking as someone who has been to China a few times, their food is quite authentic in its flavor. This may put some people off but I loved it.
And the location was great. I say go but only if you have low expectations for sushi and like good real chinese food.