Acceleration is of key importance and often overlooked.
Lt. General Adolph Galland, LuftwaffeAcceleration data was preened from the speed tests. Data was taken every 10 seconds as the plane accelerated to its top speed. To properly compare aircraft, the graphs are shown as acceleration vs current speed. This can then properly show which plane can acclerate quicker from a given speed. Due to the large grainularity of the data, points were plotted and then a linear regression was applied. Be aware that data taken near the ceiling for a plane may have bad data points.
Note the results are in True Air Speed (TAS), not what pilots are used to seeing on their gauges (Indicated Air Speed, IAS).
Pick up to 5 planes and 5 altitudes to compare.