The dynamometer in this picture isn't displaying rotational speed very precisely but are you certain that this is how RoC dynos make their calculation?
29,808N * 65,000rad/s = 1,937,520,000W
29,808N * 65,499rad/s = 1,952,394,192W
29,808N * 65,999rad/s = 1,967,298,192W
EDIT (thanks to...