That brings hope ;)
In one of my mission I put about 70x Shilka, 30x TOR, 30x OSA 30x BUK, 10x Patriot 10x S-300, 40x Avenger, 20x Strela-10.
The player had to kill HQ based there, so when 4x Su-25T fired all AR missiles and SAM site answered for that on the sky was armageddon.
There were at least 60 missiles at one time over the area plus 6 MP players around.
FPS went down to the unpleasant level on the ultra low settings - when I write ultra low I mean manually cut particle effects, deep file cut of almost anything.