Renzo, “So operators in cold countries are safer than the ones flying in warm countries”, yes if the pre-landing distance assessment is based on the AFM data.
Alternatively, using the manufacturers ‘actual’ distances (QRH) plus corrections and factors, then the risks in landing could be lower, but everything depends on what adjustments and factors are made, an understanding of the basis of the manufacturer’s data, and as always how accurately the approach and landing is flown.
Does Dassault publish ‘actual’ distances in the QRH; do they differ from the AFM?