I saw a picture of Ray kicking the tyres on the first one and could not see any brake fans fitted. I assume the brake spec is standard across the fleet and that the first aircraft is an accurate representation of the fleet.
I further then assume that someone at some time looked into whether or not brakefans were needed and concluded that they were not.
I'm doing a lot of assuming here and I know very very little about flying an Airbus so I might well be wrong.
Cheers
WWW