Israel Airforce may have a very good kill rate,but look at the technological difference between them and their rival airforces..The arab Israel wars have always seen IAF using a much more sophisticated Airplane compared to their rivals..It was not all about IAF's training,it was also about their upper hand in technology that gave them good kill ratios..
On the other hand PAF had mostly fought wars with a more sophisticated enemy...PAF's planes have always been technologically inferior to the opposition.
MM Alam shooting down Hunters with a Saber is an example..There was a technologically inferior plane shooting down superior planes,only because the pilot was skilled...Same cannot be said about IAF.They always been using better planes than their rivals..For that reason all the credit does not go to their pilots..most of it is because of the better plane.
Probably the best known expedition of Israel Airforce (IAF) was the operation opera in which they destroyed Iraqi Nuclear installation while flying low under Iraqi Radars,and allegedly used dumb bombs,no guided munitions..But then again,the Israilis were using top of the range aircraft of that time,and the iraqis were using near medieval defenses and airplanes....
If an F-22 Raptor shoots down say and A-5 Fantan,it will be unfair to give all credit to their pilots..Its the plane which most probably made the difference...Same was the situation of Israel in most Air combats...Whle the opposite was the situation of PAF.