Electric pickups and heavy-duty pickups differ along two separate dimensions. Electric describes the powertrain; heavy-duty describes a truck's intended capability and design within a manufacturer's range. A battery-electric pickup is therefore not automatically a substitute for a conventional HD truck, and electric propulsion does not inherently rule out heavy-duty design.
For a purchase comparison, identify the exact battery-electric candidate and the exact gasoline or diesel HD configuration. Then compare payload, towing and hitch support, sustained loaded travel, energy access, and daily practicality. Similar exterior size or impressive motor torque does not establish equivalent working limits.