The A330MRTT has, as I understand it, a modified AFS whereas the 'green' civil A330 aircraft operated by AirTanker are simply normal A330-243 aircraft painted grey.
So first you say you 'as I understand it'
Then you quote something very exact
oilygreasemonkey, the Voyager certainly does have a modified AFS, which incorporates 'bank angle mode', for example.
You clearly know more then you let on.
However I still maintain the that the afs itself is not modified. The bank angle mode you refer to is indeed an extra function which is fitted to the FCU for use during aar. However it's fuction can only be used when the aircraft is in air tanker mode and the signal is generated by the modifications fitted to the mil ac and then sent to the AFS system.