Ok, having being referred to as a "hater" I'll take another stab at this to try clarify some things.
So we all know I’m not some jablony just spouting off, here’s a brief resumé:
I've worked in automotive and aerospace for the last 3 decades. I'm University educated in mechanical engineering, an ASE certified technician, a licensed AME and have been designing, rebuilding and operating aircraft propulsion systems (J85CAN40, T58, T700 to name a few) longer than some have been alive. I've worked on terrestrial diesel and gas engines, plus both both recip and turbine (radial and axial flow) aviation engines, dealing with all extremes of climate and operating conditions. I am currently qualified flight crew in the RCAF. I'm not a pilot, I'm a Flight Engineer (too smart to be a pilot! LOL). I felt the need to get out and do something a bit more "hands on" and make a difference in the world besides my earlier theoretical and behind the scenes work. I’ve also raced motorcycles (err, maybe that should be crashed high rate of speed motorcycles!), dabbled a bit in off road rally and was (but am no longer) and avid offroader who’s popped more diff’s, bearings, ujoints and other components than he’d care to admit. I'm also qualified to operate everything right up to 80,000 pounders civy, and a heck of a lot more military...
To say I'm qualified to speak a bit on the subject of engine performance is reasonably accurate.