I call BS on this just like I call BS on all of Russias super planes. Sure, they make a really cool technology demonstrator with claims of super badA performance, then nothing ever comes of it. It's the "OMG BERKUT!" days all over again.
Judging from the usual Russian flair for vents, grills and pointy things, that beast is probably about as stealthy as the Silent Eagle. Which is to say, very nice compared to traditional aircraft, but not good enough in the F-22 Era.
We sleep peacefully in our beds at night because rough men stand ready to do violence on our behalf