@ Claret:
The reason you never saw anything over 125 % TRQ is that the instrument simply does not indicate higher . You could have had much, much more.
The ECU stores the actual value which then can be retrieved by maintenance personnel. Also, the FDR should record the actual value.
The PW123 does have a system installed which will cancel Np underspeed governing from the ECU and uptrim the opposite engine. (Source of all info: AMM)
Supposedly this system should prevent damage to the engine/prop which had the unscheduled auto-feather.
Just my penny's worth.....
Regards, PD