F16 Fighting Falcon is primary a fighter aircraft, F16 can pull 9g and it isn't that hard to get it to pull that kind of tight turn since it is such a well balanced aircraft, the amazing thing is the aircraft does what the pilot wants it to do, when it wants to do it
F15 is a air superiority aircraft, no doubt it can dogfight but not in the same way as F16, the super hornet is designed for low altitude fast turns where the air is thick take it up to 30,000-40,000 feet 450 knots and it won't out turn a F16
Flanker is a multi role aircraft designed for air-land, air to ship and air to air also as a bomber, it's not designed to engage in a tight turning fight although it's been given all the tools to do so, But at the end of the day no matter if you give it thrust vectoring or super cruise the airframe does not give it the agility to engage close qaurters nor does it have the advantage
J10 is in the same category as F16, so it is no surprise it can out do Flanker in WVR