Paralay is one the forum members. Everyone here knows his site. Are you going to repost all contents here?
First three pictures is not PAK-FA, these are GD prognosis of how 5 gen Soviet fighter would look like. was first time posted at this forum, reposted at Paralay site, and you want us to wow on your discoveries?
I already posted a thread here on that design, and that MiG-2000 design was by General Dynamics, as Frank stated, not the Russians. That was one of the designs they came up with, based on what the Russians were studying for their next fighter, in order to aid the design of the ATF. You can see in planform, it wasn't far off from the MiG 1.42/1.44, although they definitely got the weight class wrong.