[Dottore]

I think I've noticed a direct correlation between the business of an airport and the quality of the landings. Places like O'Hare, Heathrow, Frankfurt the landings always seem to be hard. Maybe because the pilot just has a small window in which to put the plane down.

OTOH if you are the only plane on approach and have all the time in the world to line things up...things are generally smooth.

Purely anecdotal...but that's my impression.