I had a quick look at VXO/Smaland and it's altitude is higher @ 610' than nrt. Narita has no terrain off the runway splays and is slightly longer than VXO. These differences seem small but have a major effect on performance. e.g. engine failure at V1 aircraft has to be able to clear terrain after becoming airborne so sometimes this limits the actual take-off weight even though the airframe/engines can support a higher weight.
Also the engines may not be as higher a rating of thrust. My data is based on GE (67,500 to 75,000 lb) but suspect the A330-200 RR has less thrust (67,500 and 71,000 ).
Cheers
p.s. are you basing VXO data on 'config 3'?
p.p.s. some more info, My Travel A330-200 are RR therefore 4000lbs less thrust and 360 seats
, the A330-200 I worked on has 303 seats and GE powered......mystery solved
