I've never heard of a health standard A,B,C,D set for Canadian restaurants. I don't even know what the policies are with regard to this.
purelife - there are tons of affordable Chinese restaurants around that are kind to your budget. Try Hons on Robson St or Chinatown. The foodcourt at the Crystal Mall is not too bad either. Though you may scorn at the food court meal, the ones created at the Crystal Mall is really good if you know what to order.
Chinese food at western food courts are the pits. I don't really like them either and they're so bad for my diabetes. I believe Chinese food should be cook then and there, not sit in some hot lamp for eons.