There is no maybe. Also not just stealth. Avionics and weaponry too.
Lol, it's funny I hear this from people all the time, have you ever looked at their aircraft compared to other nations though, when you do a comparison it paints a very different picture, one far more balanced:
F-16: Starting with their build em cheap and stack em high go to bird, well yeah that's a perfect description, over in Europe the Typhoon, Rafael and Gripen are all better planes, over in commie land the MiG-35 and Su-35 are both superior too.
F/A-18: Better plane than the F-16, but very much the same story, it wasn't quite as good as the MiG-29 back in the day (the USAF flew them head to head against the Luftwaffe in an exercise after West Germany reunified) and it isn't quite as good as the MiG-35 today, again the Typhoon/Rafael are better, the Gripen would be evenly matched this time, and the Su-35 would dominate.
F-15: Great plane and they have done a lot to modernize it, would take the Rafael, Gripen and Mig-35 on paper. However the Typhoon is still the better plane as is the Su-35 (The Su-27 was designed specifically to be better than the F-15 and was, however after the USSR went bankrupt and Russia spent the 90's in austerity the F-15 pulled ahead but in recent times big spending has seem the Su rise from the ashes and the Gen4.5 Su-35BM can literally dance rings around the Eagle).
F-22: Currently the best in the world, nothing can match it, but it isn't invincible as shown in training exercises. However it is now out of production due to the programs ludicrous costs and the Su T-50 will soon be here to take over as the worlds top jet fighter (the first time Russia has held that position since the original Su-27 entered service).
F-35: Completely ignoring the fact it's based on British and Russian tech (its basically the offspring of the Harrier, the Yak-141 and the aesthetics of the F-22), Then this plane has no global equal (in it's intended role anyway, as a jet fighter it would be on par with the F/A-18), the closest comparison would be helicopter gunships.
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