zerozero
With MIN or MED selected the autobrakes are modulated to achieve a constant deceleration rate in the order of 4ft/sec/sec and 6ft/sec/sec. at about 1800psi
MAX auto and RTO give the max. rate of deceleration with hyd. press of 3000psi.
As glueball says with the application of rev. thrust the autobrake will still aim for a constant rate of decel as selected except when MAX auto is selected.