Thanks for the advice. I am always chilled. You won't find me misbehaving with anyone because after all we come here for our own respective enthusiasms.
Now as for J-20 being not for export ... that is correct. But J-10A was also not for export back in 2005 in Musharraf era ... but it was on offer to Pakistan ... in fact it was Pakistan which wanted some changes before inducting ... and some of those changes found their way in J-10B. The rest is history.
So, my friend nothing is absolute it all depends on national interest. But it is too early to say let the 2nd J-31 prototype fly and wait for more detailed specs come in limelight.