your math is Right. sort of.
but its (Incomplete).
yes, thats what happens for all (allied) defensive forces stationed at your base when a fight occers.
and ONLY at (your base).
the stimulant %'s will also be included into that same equation.
as well as (both partys) armory gear, hero gear, base add-on buffs, contract re-negotion levels, and any ACTIVE "black market"items, and "Executive percs" saying its active. Spec operative benifits where they may apply... Black ops temporary buffs....
i mean, there is like, a hell a lot of MATH thats going into each battle to determine its outcome, so, do not make the mistake of thinking the numbers you can SEE up front at first glance, is neccasarly how it will all unfold when the system comes up with an (=) sign.