Clearly I have to break it down for ya'll non-football people! LOL
Acceleration is the distance it takes to reach your top speed!(it is) So if it takes you 6 yards to reach your top speed thats what your accel is. Now take that same 6 yards that measures out to be your accel the 1 to 2 yard you gain the most speed in would be consider your burst.
Making acceleration and burst the same thing people!