The Air Raid offense is a passing offense. You need a QB who is dead nuts accurate on the throws, and pass catchers who have speed up the ying-yang. Since it's a spread offense, that one on on coverage and zones on defense need to be manned by darned good players to stop it from succeeding. To me, it also takes a QB who thinks, and knows how to see his reads out there, because a lot of the throws are timing, and the ball is in the air before the receiver even makes a cut in a lot of instances. Therefore, that receiver had better run a precise route, and know that he has himself in a position to make the catch, and not let it get to a defender in front of him or behind him. I might add, I want a QB who is quick on his feet. I don't want him trapped if there is nobody downfield to throw to.
As far as the run, there will never be top RBs heading to your school to play RB, unless the guy is more of a receiver/blocker, than a guy carrying the mail. But still, you need one or two pile driver who can get you that two to three yards to get that first down.
Air Raid is fast. Quick action on the field. The Pro offense is slower, and more methodical. Blocking is more intricate, and running backs are at a premium. The QBs also have to be guys who can work the system the way intended.
Comparing the QBs in the systems. The Air Raid QB is like a frisky two-year-old race horse, who wants to get out there and gallop. The pro set QB is more of the veteran, who's eyeing the filly's over in the other pen, thinking that if he can win a few more races, some of them are going to be his.