Sir from what i have heard from some very reliable inside sources; FC20 has not been pushed down, it is still slated to join PAF during the 2014-2015 time frame which was originally envisioned. Due to an immediate need for a high tech fighter to keep up with the developing threats, J10A is being acquired to fullfill that gap. PAF envisioned in the past that they could fill this void with the release of additional used F16's from the US, but seeing how things stand with the US at current, PAF is putting its contingency plan into action. Also i agree, i heard the same thing that our J10A will not be the same as the Chinese one which are currently in use. There will be improved avionics and radar that will be on board this aircraft. On a different topic, i still believe that it is not the Air but the threat from Sea that is more dangerous to Pakistan. Flankers and the new MIG29K can simply outfly PAF jets in terms of endurance, PAF desperately needs aircrafts that are high in endurance and can cater to the threat from the sea. Air Warfare in sea is going to be much more different than Air warfare above land, we need fighter aircrafts near the coast that can fly CAP's for prolonged periods and if push comes to shove, can fight off enemy aircrafts from stand off ranges. With the way the IN Aviation is gaining strength and additional SU30MKI's joining IAF, our shorelines are becoming increasingly dangerous from the air. I still believe that PN is well equipped to fight IN's surface and underwater fleet with its dozens of ASM's and other force multipliers in our waters, but its the threat from the Air that is most definitely PN is not designed to fight.