I spoke with a Tomcat pilot shortly after the war about the air taskings. The AWACS and F-15C pairings and their in-country operations over active Iraqi bases gave them the greatest chances at engaging Iraqi fighters. Their sole purpose was to clense the airspace. Other aircraft were left to the escort and BARCAP roles. A great many Navy aircraft (E-2's, F-14's, etc.) were tasked with a fleet defense, effectively taking them away from the action. This F-14 pilot complained about many long boring flights.
The Saudi kills on the Mirage F-1's were as much a political decision as a tactical decision. USAF F-15's, Saudi F-15's and F-14's had all intercepted the two F-1's but the opportunity for the kills was given to the Saudi flight. Almost purely a PR play as the two Mirages had nowhere to go.
Despite this great success, it seems like a very low number considering the 600+ airplanes that Iraq had in its inventory. IMO - The Iraqi pilots that attempted to fight were either extraordinarily brave or incredibly naive to the potential danger.
The Iraqis did score one kill, however. On the opening night of the war a MiG-25 shot down an F/A-18. That was the airplane flown by Cdr. Speicher.
MiG