The braking ability of a potential tow vehicle should be one of the FIRST considerations when picking a tow vehicle as you probably already have the trailer and therefore will know the weight
and size of the trailer.
Pulling a trailer is not a real issue. STOPPING the tow vehicle AND trailer is a BIG issue. The towing capacity listings on vehicles only tells half the story.
The vehicle manufacturers should be required to list the braking capability of the vehicle loaded and unloaded at the GVW's listed for that particular vehicle (without trailer). That would really tell the true "capacity" of a vehicles loaded carry capacity and safety when loaded to the maximum GVW (Gross Vehicle Weight).