How accurate is this website?

Airline Pilot Demand | Audries Aircraft Analysis

According to the website, this is how many pilots regionals will need in 2015 alone.

PSA:679
TSA:617
Republic:554
Mesa:356
Skywest:305
Compass:247

These are just some top ones....does this seem accurate? Also, what's optimum staffing for these regionals? 11-13 pilots per aircraft?