[Suhiir]

If they're pre-made scenarios you're stuck with what you have, all you can do is try to make the best of it. Play WinSPMBT a while you'll notice the sorts of targets the AI like to bomb and learn concealment in trees is your friend when the AI has lots of aircraft and never, never, over concentrate your forces.

I tend to play as the US thus their ground based air defenses are pretty weak, air superiority or at least parity is sort of assumed by US forces.

As Mobhack noted MPADs are pretty much a waste of time as far as shooting anything down, but they can damage aircraft/helos ... and damaged aircraft do not return that I've ever seen, whereas helos will retreat off the battlefield if damaged.

I usually grab a pair of SAMs and trucks to move them (since the US has very few SP SAMs) and ALWAYS ammo trucks. While easily overwhelmed by the AI you'll whittle them down eventually.