Exactly and as we know, the best person rarely gets the jets, it's whoever gets there first. Then if a good person gets it, they go like 80-3 since AA sucks real bad. The only people who say jets aren't overpowered are the people who go 80-3 in them.
This is why we need to get uncap attacks confirmed allowed on all servers. At least wherever the uncap is an airfield. Because you cannot guarantee that your own team's pilots will be able to give the other team's pilots a good fight, and if they can't, infantry need to be able to bring justice to the enemy pilots at their airfield.
Also, there are LOTS of ways to own AA as jets in BF2. not the least of which is strafing them from beyond their lock range. And even if you aren't good enough to do that, flares give you a free shot at one, and then there's the fact that even if there is a second AA going, 2 shots won't kill a jet. So, the jet kills the AA, and once they are dead, the jet strafes the AA immediately upon respawn for another minute or two, teaching the enemy not to even TRY to do it again.
That said there's no way of knowing what sort of problem they'll be without first observing how missiles actually perform (BF2 missiles frankly sucked, you were better off with the no tracking super high speed missiles in desert combat), and whether or not they have safeguards in place to prevent the loopy divebombing nonsense (*cough*stalling*cough*).
It's inconceivable to me that BF3 AA, especially MANPADS, will suddenly save the day. DICE isn't going to overpower the AA in the opposite direction of BF2 otherwise no one would fly. Best case scenario is if you run around with at least 3 AA in your squad(sacrificing ability against tanks) , you'll be able to make a minor dent in the enemy jet whores' 80-3 kills.
And for MANPADS specifically, they will be single shot. Imagine a BF2 suicide chair, if those were single shot it would take at least 3 and sometimes 4 shots to kill.