I don't necessarily think this is the case. Bentley has a very strong image. Don't forget when Rolls-Royce and Bentley were still being produced side by side, by the late 1990s Rolls' sales were 10% of Bentley's. The Bentley image is far less pretentious and probably more appealing to many. The Rolls-Royce brand image does come with a lot of "baggage" -- for what ever reason, people do tend to associate Rolls-Royce with snoberry and the British class system.