In the US market during the past 20 years, German cars were dominating the luxury section for sure, which is due to a combination of reasons. For example, American only focus on high margin truck/suv in the 90's. Jap were trying to grow in the economic vehicle section.
But now the landscape is changing. Lexus has the biggest market share and they are proudly selling vehicle above 100 large. The last generation Acura TL battled the whole BMW 3 series with only 3 option levels, while BMW 3 had like 6 engines 4 body styles. Also in the sports sedan section German actually is losing ground to Infinity as well as Cadillac.
I just had a friend who was driving an AUDI Q7. His car was waiting at the traffic light and a 40 meters long container truck hit him from behind. He walked away from the accident with no injury except tensed up muscle as expected. If he was in a Japanese car, he might not be so lucky.
The Q7 is not an immediate write off after the accident. It will get assessed to see if structural damage has taken place, to see if it is repairable.