Even with 'weight reduction programs' those figures are close enough to be at least ballpark.
3.5 tons of metal pushing out 17 tons of thrust on an MTOW 26 ton aircraft that just happens to have a wing area roughly half of other Gen 4 or 5 fighters.
This all reminds me of stories I read about the German Propaganda machine keeping civilian hopes alive during the dark days of 1944 with promises of magical 'Wünderwaffen' that were going to save them all.
I hope all the promises come true. I will truly admire the machine if they do.