CoolP is correct - There is a time lag until the temps register on the display.

In the RW, we always use full flaps for landing & final speed of bug + 5 unless there is an ad for wind.
Using less than full flaps makes for a longer roll out and more brake wear.
The rule for auto brakes was - CAT-II brakes 2, CAT-III brakes 3.
Using max braking was a pretty violent thing to do to the plane.
Remember, for every extra knot Boeing says it takes another 50 feet to stop!

Lou