Looking from A330 manuals in SmartCockpit (I assume those are really old ones, judjing by the looks) and to the most recent manuals in my company, A330 FCOM never mentioned how much down trim is applied. But the wording they use is still the same: "At 50 ft, a slight pitch
down elevator order is applied.".
I also agree that the flare needs less input than the A320, my only observation was the apparent lack of THS freezing at 100ft.
FCOM DSC-27-20-10-20 FLARE MODE
When the aircraft passes 100 ft RA, the THS is frozen and the normal flight mode changes to flare
mode as the aircraft descends to land. Flare mode is essentially a direct stick-to-elevator relationship
(with some damping provided by the load factor and the pitch rate feedbacks). At 50 ft, a slight pitch
down elevator order is applied. Consequently, to flare the aircraft, a gentle nose-up action by the pilot
This is the latest FCOM available for a fleet of CEOs and NEOs.