Twiglet, you contradict yourself. You admit that only a couple of weeks of roster were visible (and what a roster it was for those two weeks!) so you can't say if fatigue was a factor or not. Then you go on to say it most likely wasn't.
The pilots (as opposed to the management trolls) posting on here from Fly Dubai and the other airline across the airport are flying these rosters month in, month out. Trust me, they know the difference between "sleepy" and "fatigued".