^ Just from sheer ingredients I would say Xu Hue is authentic.
Been to that place in the last month or two, and it takes an acquired native Asian palette for those dishes.
On the other hand, I have a very western approach to food. Add tons of sauces till until it's a punch to the face with flavour. It's the same story with North American pasta and pasta sauce. In Italy, pasta sauce is supposed to be like a condiment, like ketchup. But in NA, it's lathered on like fish sauce and com ga.
By tons of sauce, I would say, till the broth is grizzly bear brown.
I've heard Mai's in Langley is supposed to be really good. Have yet to try it. It could be the same story with Pho Stanley in Delta, pho place in a white neighbourhood is bound to get good rating from the exoticness factor.