Here we go again....
Almost 2000 F-35s produced by 2030 for the US Military and we are still talking purely about qualitative advantages? How many Su-57s and J-20s are Russia and China going to produce combined by then? This is of course ignoring the fact that the F-35 is arguably a better plane (kinematics should be the least impressive aspect of a fifth generation fighter)
About F-35 stealth:
""I would say that General Hostage … is accurate in his statement about the simple stealthiness of the F-35 [with regard] to other airplanes," Bogdan said in the interview. The statement was accurate for radar cross section, as measured in decibels, and range of detectability, he said, and he scoffed at the notion that anyone can tell how stealthy an aircraft is just by looking at it.""
From: http://www.airforcemag.com/MagazineArchive/Pages/2014/December 2014/The-F-35-on-Final-Approach.aspx
The F-35 works well for US as it will have the F-22 to clear the skies of enemy aircraft.
If kinematics is not important for 5th generation fighters, then why was so much effort placed on making F-22
extremely fast, agile and able to suprecruise at Mach 1.7?
F-35 will be a poor option for any US ally that has to face enemy 5th generation fighters optimised for air-combat.
Turkey, South Korea and Japan are developing their own 5th generation fighters not only to boost their own defence industries, but the fact that they have little faith in the air-to-air capability of the F-35.