From: Newark, OH
Correct, the troop size (crew) has a very minor impact on the overall unit capabilities. The number of subunits in a unit matters, but it is not a cut and dry answer. Size of the unit, think of it as foot print, has impact on firepower making it greater, but also makes for a bigger target and getting hit more (also have to factor in cover). So a small number of subunits in a unit has lower firepower by comparison, but can harder to find and hit (again factors for cover will vary things). One last piece of the puzzle are the unit's soft factors (training, readiness, and morale) also impact the equation and they change as the fight progresses. This does allow for a smaller highly trained force with high readiness and morale in good cover to hammer a larger unit that is poorly trained and low on readiness and morale. As it should be.
Sorry there is no A+B=C easy answer. No chess game here.
Work on Southern Storm continues! Very busy times right now.
Cap'n Darwin aka Jim Snyder
On Target Simulations LLC