One only has to look at its specs.for that,to,said ie. Thrust to,weight ratio less than 1 to 1 most times small internal air to,air missile loadout in stealth mode maneuverability said to equal (but not surpassing) the f16 stressed BVR combat preference lack of internal gun on Marine and Navy birds and I can go on poor pilot visibility for dogfighter (can be a real downer) in a turning dogfight just seems though they have forgtten all the lessons learned over and over again