Las Vegas doesnt have the best Chinatown in the world and its nothing like San Francisco (or in the UK Manchester or London).
We ended up going to Sam Woo BBQ as it looked the best from the outside and looking at the menu. The food was normal Chinese (cantonese) style and all the dishes were just like back at home.
Maybe we went on a good day but looking at other reviews, other people dont rate it at all!