Sorry to resurface this opinions pool, but I will add my opinion to it regarding towing in the USA. I just experienced this decision process.
Yes, there are differences in all EU cars once they get to this side of the pond. The DOT headlights shoot 10% of light
upward to illuminate road signs (including the upcoming traffic), in the EU this number is 0 by design, there are remotely adjustable headlights, more door brackets for side impact, different bumpers, different taillights, engines, transmissions, and the list is long. In my opinion these are secondary causes to the different towing standards in the USA. Any engineering team could take these partly differently built cars and design them for similar towing as in the EU. Towing by passenger cars (perhaps except Volvo) was not in their list of objectives from the get go.
There are legal differences of how towing limits are managed on both continents. Personally, I believe that following the rules is far more stringent in the EU than in the USA. As an example; there is no ambiguity about the particular vehicle towing limit, it is printed on the registration
paper, it is based on options for the particular vehicle, and penalty for exceeding that number is stiff. During the purchase of my 99 F350, I calculated the towing limit, had to pull a large boat, and finding right information for the towing limit equation was not simple.
So, here is my opinion. If in doubt follow the money. All manufacturers will always promote products with the most profit and rightfully so. The phenomenal growth of the SUV market in the USA was the result of these higher profit strategies. Just go to any dealer and ask for a towing vehicle, will they lead you to a passenger car? It takes a long time to build market perception, there are many vectors driving the market perception toward the highly profitable SUV strategy. One of these vectors is building awareness that passenger cars cannot tow. Towing became a special privilege reserved for SUVs and trucks only. So, I ended up with a Sprinter.