Sports cars usually prioritize responsive steering, braking, and cornering on paved roads. Off-road vehicles prioritize moving over uneven, loose, or obstructed terrain, where clearance, traction, and the ability of the wheels to follow the ground become central. The difference is the environment each vehicle is designed to handle, not simply its power or number of driven wheels.
The categories can overlap, but ordinary examples solve different problems. A low sports car may feel precise on pavement yet have limited clearance over an obstacle. An off-road vehicle may negotiate that obstacle while making different compromises in road response, noise, and ride. Compare the actual design and terrain rather than treating either category as universally more capable.