Chesty,
I would beg to differ. At that point an RTO is a minor affair. To try and determine which ASI is incorrect at that point in the T/O is a bad idea. It may not be as cut and dried as a simple failure of one ASI. You could merely have a difference of opinion of 10-15kts. I don't remember the Boeing but the airbus(330/340) has a limit of + or -6kts on the ground.
I would personally rather stop and look a little silly than go, cock the identification of the problem up and look dead.