amazon FBM shipment date calculator is broken.

for the past 2 weeks on a specific sku, I am showing an average delivery time of 3 days. A standard deviation of 2 days. Meaning that 68% of the time it will arrive in 5 days, 95% of the time, it will be delivered in 7 days, and 99.7% of the time in 9 days, Yet amazon is showing 14 days delivery time. The odds of this occurring in a binomial distribution is 1 in 4 million. Thanks amazon. this is blatant anti trust stuff to kill FBM.