Thanks AZR,
I think some of us are enjoying deliberately delaying looking at the BEA's conclusions !
The crew's perception that the two CFM 56-5-A1s were slow to spool up probably indicates more about the effects on their metabolic-rate of the urgency of the situation they suddenly recognised than it does about the performance of the engines.
Why would the two engines, controlled independently by their respective FADECs, accelerate slower than normal; but in perfect unison?