Very cool video. You can see lots of detaljs.
seems to me that PAK- FA looks very much like the F22 ... nice work ..... just paint the both of them the same color then it is hard for a lay person to tell the aircraft from a distance ....
Cockpit , Avionics and weapons systems make the crucial difference ....
the Indian variant should have lethal subsystems and weapons besides the improved Israeli radar equal to F22 that seems to go into it ....