T,

Maybe this is what I was failing to consider:

On a flight where there is < 6:00 hours from TOC to TOD (I'm assuming :30 and 1:00), IOW block < 7:30, you cannot give everyone 2:00, so you cannot have all breaks the same.

OTOH, you can't comply with the requirement of have the PF rest 2 hours in the 2nd 1/2 of the FDP AND keep 2nd break, without some pretty gross imbalance, which I guess was your original point.