Rustle
I think you can take it as read that on a dry, paved runway the brakes will out-perform the thrust. Were that not the case your power-checks and short-field takeoff (full power before brake release) would be "interesting" to say the least
I see where you are coming from, but what about the kinetic energy already in the airframe?
AFAIK, there aren't any accelerate/stop distances published fror SEPs, which could be factored to account for the variables you mention.
So there must be an element of uncertainty about stopping performance, although practically speaking I've rejected three take offs and never had a problem stopping - with one being a decision made at 50knots in a PA28 on a 700m dry grass runway with a slight downslope.