Airbus has always been giving landing distances under the assumption, that you are touching down with Vls, at least for the A319/A320/A321 which I'm flying. Operating this way wouldn't be the wisest choice under most conditions, so my airline has defined Vapp = Vls + 5.
As long as we are not operating into lilmiting fields we even add an increment to Vapp if th FAC calculates a heavier aircraft than on the loadsheet in order to restore the 5 Kt between the FAC-calculated Vls and the FMGC-calculated (based on Loadsheetdata) Vapp.
Unfortunately there are no performance chart available for Vls +5, hoever 10% will do the trick, as is noted below 'per 5kt speed increment (and no failure) add 10%).
That the landing distance tables don't state the assumptions under which they are are calculated is a shame. Even the 'Performance' section in our OM-B only states 'Landings Distances are calculated using a speed 1.23 times the stall speed'. Under Speeds and Definitions you can look up, that this is Vls.
Safe Flying, MAX