I speak a little German, but I also live in Germany. You cannot compare towing ratings from manufacturers between the US and Europe. But I guess you can judge what the vehicle is capable of towing.
Two things:
1) Trailers are built completely different in Europe. There is very little tongue weight of a European trailer. The axles of trailers are almost at the center of mass of the trailer so that they do not put much weight on the car. You will see small cars here pulling trailers that are bigger than the car!
2) You cannot drive over 80 kph with a trailer practically all of Europe. Any trailer attached to a vehicle then you are restricted to 80kph, no matter how small the trailer is. That is 49.7mph limit. Trucks, cars, vans, doesn't matter what the vehicle pulling is, 80kph. You don't get to go unrestricted on the Autobahn :-D
The second item above is the big reason for the differences. A vehicle manufacturer is going to allow more weight to be pulled when the risk is lower.
I am looking at buying a RAV4 but one big black eye is the speed limit they recommend. They say not to drive it over 150kph (93mph). I drive 150 all the time in my current vehicle! I may be buying a Lexus NX 200t instead.