chance to be tested in battle. What unique about American millitary is that every once a while they have a real war somewhere in the world where they can fully test their new weapon systems. When can we get chance to test those new weapons in real war? It has been widely believed that usually a weapon test in real war can show its true face. Among American airplanes, everyone knows F-4 and A-10. These airplanes had very low expectations before getting into real battle. As it has shown later, they had been very effective in battle and become one of the most valued US airfighters. The point is that Chinese airplanes, thought advanced a lot, should find a chance to get into a battle. With current world situation, it is real hard to find such a chance. The best opportunity is a regional war beteen India and Pakistan. In it, we can reall get glimpse of whose airplane is better: India and Pakistan or actually US's and China's