...F-15, F-16 were all excellent aircraft back in the day, and to a lesser extent still are. The F-16 has reached its maximum potential ....
About the F-16, if we rely on west's pov, this aircraft is among the best of best of the world, and thanks to its supposed victories in Israel's wars, and in Iraq. I've seen a long time ago an interesting analysis of Vladimir Iiylin about it. First of all the myth of 100 syrians aircrafts -mostly due to F-16 and F-15, but... - downed against 0 for Israel could not resist to the scrutinity of facts. During Desert Storm, hundreds F-16 were engaged, none downed any iraqi aircraft. Even the A-10 succeeded in downing a, iraqi helicopter. If we know that Iraq managed to send to Iran several dozens of airplanes into Iran, including two Il-76 Adnan iraqi Awacs, as every one know they are super manoeuvrables, then where were the F-16 ? At such point that a high US responsible said in that time that the F-16 is less effective air planne. During the 90's the number of aircrafts downed by F-16 is not higher. But it is enough for the west propaganda to claim that its nag is a stallion effective.
About the F-15. We talked much about the circumstances of War gulf, and how the secret surrounding what's really happened is dark. F-15 were in outnumber at first, and Iraqi high command did not desire to engage a real air battle. Moreover, we had US and its coalition against Iraq. Then we could not say nowadays that the F-15 is super fighter. In a normal situation against fair combat like 2 vs 1 as 2 F-15 against 1 Mig or Sukhoi, the F-15 will be smashed. During cope india 2004 even the Mig-21 Bison took out F-15. I did not mean US pilots are not competents -on contrary-, but the choice imposed by the militaro industrial complex lead to this stalemate.
The last conflicts involving US and its F-15, F-16, F-18 are not enough to assert that these aircrafts are really effective. However, if a conflict occurs now between China and US, and if the F-15 scores 30:0, and F-16 scores 20:0 against the chinese sukhoi I will say US aircrafts are the best of the world. But it is far to be the case. I would say the contrary, the chinese SU-27 will score much against US aircrafts including the F-22, and F-35.