The F-15 is one of a handful US fighters that we can all call a true air superiority fighting machine. It's lineage- the P-51D Mustang and the F-86 Saber are the only two I can put in the same class as the F-15. Yes, the US had other warbirds just as good - the F4U Corsair and P-47 Thunderbolt. But the P-51 did encompass everything a fighter should be.
The F-15 came about because of Russia's Mig-25 Foxbat, which some Western analysts say it was loosely based on America's A-5 Vigilante Mach 2+ Recon jet. Maybe...maybe not. The F-15 looks like it was loosely base on the Mig. But regardless, what was born was a true fighter, one that is capable of extreme maneuvers that no fighter could have done before. About the only fighter that could eclipse the F-15 was probably its large stablemate, the F-14 w/its variable geometry wings.
It seems to me the F-15 set that standards, pretty high, for a fighter. Everyone wanted the prize trophy as Top Gun. Time and wear and tear has caught up with the Eagle. England, Germany, Italy and Spain have their Typhoon, a fighter I truly admire, such an amazing machine - my hats off to those who developed it. France has their Rafale, Sweden has the Gripen and China has their J-10 (is that correct?) and the Russians have the Flanker line.
But when I read an article, it's mostly about, whatever nation it is, "we have a plane that's as good or even better than the Eagle." The way I interpret this is that nations wanted to build a plane that was like the Eagle in every aspect but equally as deadly or deadlier. In a way, the US should be flattered. But that should also serve as a sign of the importance of maintaining air superiority in any region because there are nations out there who aren't friendly to the US and are buying these very competent fighters.
It's a good thing that the US had the F-22 Raptor developed, but is the price of over $100 million per copy worth it?