Carlo Kopp and the APA crowd have ascended to godhood with the recent accessment of PAK-FA. Just by looking at public image of the first prototype, he already knew about its thrust to weight ratio, avionic package, stealth, supercruise speed and accurately compared it to the f-22 :

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I love how when he mentioned pak-fa's short coming in term of stealth shaping, he never forgot to stretch it back to the f-35 that it "suffer from the same characteristics."
All hail Carlo Kopp! He's our savior against the satanic JSF team.
However, one thing bugs me about APA's godly perception and observation is the statement that the public unvealing of T-50 reveals its accomplishment in advanced stealth shaping that even APA had failed to predict, making the T-50 much more scarily capable than previous "analysis" from APA.
Wouldn't APA failure to see that any aircraft aimed at stealth gonna have at least some flat surfaces and facets and acted all surprised when the thing showed up kinda contradicts with their godly ability to predict precisely RCS of an aircraft based on jpeg images?
I guess it's one of those mysterious thing in life, like the unicorn, which we may never be able to explain!