"Personally, I do not see the need for such a precision in data monitoring"
FOQA is not just a tool for use with A/C operations, it can also be applied to Airfields. Identify where the "suspect" airfields are or indeed runways.
It seems that everyone has this belief that FOQA is used to examine what went wrong and why, and to spy on the pilots (although thankfully this seems to be phasing out as more pilots see the benefit of FOQA), well this is not the case FOQA should be used as a safety tool detecting trends and attempting to prevent events before they happen. Of course there are times where you would need to investigate a minor incident, and in this case precision is a very important factor.
"one might do a skidmark analyses"
Try doing a skid mark analyses at LHR 27R
