It was found, long ago, that on the 747, that aerodynamic braking by keeping the nose up is not as effective as putting the nose down and letting the spoilers do their job... i.e. putting more weight on the main gear, increasing wheel braking effectiveness. With the nose high in the air, I gather that the spoilers are being sheilded from the airflow.
This is mentioned in our AOM.
I'm very surprised to hear that some pilots are still using the nose-up technique.
Putting the nosewheel on the ground also gives you... guess what... nosewheel steering. Sounds like a good thing to me
Rgds.
NSEU