Within the range ∆X > 0 ∪ ∆X < -2 3 ∆J AP/N P , NP < AP is always true. In a normal distribution, the probability of ∆X being in that range is calculated to be 0.92. For other fair assumptions of ∆X, ∆J AP/N P , S 1 and S 2 values, the probability of NP < AP remains close to 1 as long as ∆J AP/N P is significantly smaller than ∆X. In other words, if a calculated value is normally distributed around the true value with a deviation well beyond its magnitude, a method that consistently results in values of smaller magnitude will yield statistically better results.