>and big but they have a 1.6 liter engine and can still only pull 1200-1400 kg
This is a reflection of the vehicle platforms they're built on. You take a Civic or a Dart slap on AWD, a lift kit and extra 500-1000lb of body/interior and call it a CRV or a Cherokee and there's not much spare capacity left to haul cargo or tow trailers.