Seriously, "Heavy" as in bugger guns, like heavy tanks or artillery, duh.
Attack 2, defend 3, move 1, cost 5, or something like that. Soldier holding a huge belt-fed machine gun or a bazooka or something.
This is an imaginary unit type, there was no such thing, all infantry weather they were ariborne, engineers, marine, mountain, mounted, motorized, mechanized, conscripts, regular or elite had heavy weapons.
There was not one division of infantry that had all rifles and submachine guns and another with all the hand-held anti-tank weapons and 50 cal machine guns.
Almost all the different types of small arms showed up at the platoon level.
This is different from heavy armor and artillery as they did have their own orgnaization and a unique role on the battlefeild,
also the stats you gave this unit are riduculous as it costs as much as a tank and is worse in all respects
this unit does not add strategy or realism to the game, so why would it be added?