Hi deuzx,
the first image shows the distance for an autoland with use of autobrake. The second one is used for maximum brake pedal deflection.
FCOM also says that the calculation are based on VLS+5 kts for autoland and VLS for manual landings.
Niki, an airline in Austria which only flies a319,a320,a321 says, that 1500meters was enough for their operations.
I have no answer to your question about fuel consumption, though.
regards
Lukas