Here is the conclusion from Embraers guidance pamphlet
SECTION V − CONCLUSIONS
From the certification point of view, landing performance data
presented in AFM/AOM is generated considering that the airplane will
be at VREF once it has reached the threshold and is at a height of 50 ft
above the ground.
From a practical point of view, every pilot knows that almost every
approach is better if the airplane maintains a speed higher than VREF
on final approach in order to assure a speed margin above stall should
turbulent air or variable wind conditions be encountered along the
flight path.
Due to these reasons (or at the Captain’s discretion for safety
reasons), sometimes it is not possible to cross the threshold exactly at
VREF. It must be clear that VAPP must be the upper limit in this case. In
this scenario, the pilot must always keep in mind that the performance
achieved cannot be determined exactly but may be close or better
than the calm wind performance data.
Crossing the threshold with VREF at 50 ft height will always
produce, at least, the predicted performance in the AFM and this is
the actual policy suggested by Embraer.