Okay, clashing view points. Not really anything, Blax, no worries.
For the purpose of the RPG not being any more complicated, we assume that everyone can fit everywhere, and normally mooks are divided evenly between attacks. If there's 20 mooks and 2 Zion rebels, the two rebels will each have 10 mooks firing on them. If one of the Rebels kills more than the other, the Agent will probaby pick him.
Size does not come into question in this game, regardless of what the situation is. 😛