Chefs de France is one of the best restaurants at WDW. The food is spectacular. They even can elevate a simple ham and cheese sandwich to "cuisine." The service is fair to middling, as you'd expect from French expatriots and interns, but the overall dining experience is excellent.
Rose and Crown is good -- I love the English curry -- but it isn't in the same league as Chefs de France. Rose and Crown really is a pub, in the truest sense of the word, while Chefs de France is a fine restaurant. They're both good for what they are, but that just means that Chefs de France is better, since it tries to be better.