Heathrow is very noise conscious so chances are that it would have been a max thrust departure in order to get the shortest take-off roll and a good initial climb. Because you achieve height quicker it tends to be a quiter departure even with max thrust.
I'm not sure about KLIA but I suspect that noise is not such an issue and together with the longer runway, I suspect that they would have reduced take-off thrust. On the 744, take-off thrust can be reduced in excess of 20% (54 degrees assumed temperature with TO2 rating). I doubt however that they would have used a full derate, probably something in between.
Regards
csd