See below. Chevrolet sold well over twice as many Impalas (140k US, 3.4k Canada) as Scion sold across their entire range combined (58k US, 3.9k Canada).
The brand is a money pit.
So what does that prove? Nothing, really.
Let's do the same exercise with the Camry. The Camry alone sold DOUBLE the entire Buick line. Roughly triple Cadillac. By your reasoning, I guess those are money pits? Actually, the Camry sold more cars than the entire lineups of each of these manufacturers: Acura, Audi, Buick, BMW, Cadillac, Chrysler, Infiniti, Lexus, Lincoln, Mazda, Mercedes Benz, Porsche and Volvo.
Surely this means the Camry is the greatest automobile ever made?