yes, a sim is somewhat speculative until it's shown in real world, but as per the example of the 4:1 being increased to 6:1, it becomes more accurate as the program moves foreword. If you knew about the f-35, we wouldn't be wasting our time talking about how fast it goes
Going by what I have read, I don't see most of the posters here having a grasp of 5th gen and are thinking in 3rd and 4th gen. As the hornet pilot said in effect when he transfered to the f-22, it's a different ball game.
Our hornet pilots knew bugger all about the true capabilities of the f-111 and visa versa. I won't accept "I'm a pilot of x, so I know"