You're making the parent comment's point, ICE != ICE
Mercedes is selling cars with an engine that weighs 354 lbs, with just 2 liters of volume. Now 354 lbs is still pretty heavy, but it's 354 lbs with fluids and accessories.
Some (many even) of those accessories have equivalents on a Tesla that aren't included in saying it weighs 75lbs, like pumps for coolant and the AC compressor
Mercedes is selling cars with an engine that weighs 354 lbs, with just 2 liters of volume. Now 354 lbs is still pretty heavy, but it's 354 lbs with fluids and accessories.
Some (many even) of those accessories have equivalents on a Tesla that aren't included in saying it weighs 75lbs, like pumps for coolant and the AC compressor