Oh yeah, I remember that thread. I posted some comments in it too, I was curious about it as well.
But learning a bit more about turbine engines I have to say that the evidences that Yo-Yo pointed out are very solid. He even provided some stuff from GE.
The A-10C in DCS also got an increase of 10% in terms of Indicated airspeed couple of months ago.
Although it's not official, I have confirmed with a few buddies of mine. Including the 476th vFG. ITT is still the same, however.
I am not sure if this was intentional or not. But last time I checked, no one was able to prove that the DCS: A-10C was underperforming in the thrust segment.