In my experience the Runway specific 'MLM' to which I assume you refer
normally well exceeds the a/c MLM and I would expect crews who had ANY doubts about roll-out to check the QRP weight/autobrake LDR table to determine what they needed. Only in a few places has this not been so - eg R27/wet at JSY, and there we always looked at the QRP if in doubt.
AFAIK the figures to which you refer are primarily for planning purposes?
Which runway/type did your post #1 refer to?