Since the actual required payout and the required contributions are re-calculated by the PERS Board on a recurring and statutorily set basis and based on actual earnings on stocks, your analysis is flawed.

If you could guess future returns on investment with the accuracy you demand, you would be living in Mar Lago instead of Eugene, Oregon.  

Your conspiracy theory fails primarily because your understanding of PERS methodology is inaccurate.  The media (R-G) can't disclose or conceal information which does not exist.  

The figures for "actual PERS payout each year vs current state contribution rate" is available to anyone with a computer who can type "PERS"; the 'media is unnecessary.