I would like to compare them in "武俠世界" world. (That's only my personal opinion!!!)
內功 : (That's why I keep saying Nissan/Toyota are also good cars)
Nissan = Infiniti > German cars
Toyota = Lexus > German cars
招式 :
German cars > Infiniti > Nissan
German cars > Lexus > Toyota
Both 內功 and 招式 are very important and both German and Japanese cars are good cars but they just excel at different fields...
I do think Japanese cars keep underrated in the past and now though... In addition Infiniti/Lexus 招式 are getting better nowadays...