Try landing on the numbers in a heavy jet and you can expect to leave most of your landing gear a good distance behind you.
Just about sums it up perfectly....
For the OP
FWIW many/most of the civilian operators routinely down load information off the flight data recorders and run the all the data through some fancy scanning program that looks for, shall I say "interesting numbers and events..
". So in many airlines if you "duck" under the glideslope to land on the numbers, or "float" trying to get a greaser or avoid a long roll out you can expect a one sided phone call from the office or, if you make a habit of it, an interview without the tea and biscuits and perhaps some extra time in the simulator..............that's best avoided by landing in the Touchdown Zone.