I've just checked with A320 FlySmart EFB (Ipad).
The results with autobrake for dry, good, good to medium are similar. but from medium the Ldg distances start to increase.
The results without autobrake, the Ldg distance increases conventionally. (dry Ldg distance is shorter that good, good is shorter than good to medium etc...)
My guess: the autobrake system (the decel rate feature) is fantastic, it can cope pretty well with slightly degraded rwy conditions.
Last edited by Feather44; 10th October 2016 at 18:21.