Iranian airforce is weak and use old 3rd generation planes.
As a Pakistani I don't want Iran to lose war because it will impact Pakistan security.
1) enemy will work on greater Baluchistan project
2) Pakistanis may join Iranians to fight and it will be another war on terror for us.
3) RAW which is already using Iranian soil against Pakistan will find more freedom to do that.
4) oil prices will increase and we import our oil.
5) Iranian porous border may become threat to us.
6) after Iran is invaded, which will happen, prophecies say that enemy will invade whole Arab India will fight Pakistan. Armeggedon will be started.
But I see no way Iran could win the war or the war won't happen or Armeggedon and invasion of hind won't happen soon after that.