[Al Skierkiewicz]

Alan,
Just to be sure, your answer was directed at Austin's post (and Mr. B's) rather than the original, correct?
At full throttle there is essentially no difference electrically between the two controllers as Eric has pointed out. Both the Victor and the Jaguar are supplied with a method to calibrate the controller. If you experience a significant difference after modifying the code as Alan has pointed out, then you may suspect that calibration has been changed. The indicated difference in the post that Joe has pointed to, may be due to the method used to produce the graph rather than actual speed results.
As Eric has pointed out, the "ON" resistance between the two are slight, only a .004 ohm difference between the two controllers.