Again, you're simply wrong.
The State would be paying more if it were paying another Governor the same salary Perry will be getting over the next five years PLUS contributing to the other Governor's retirement account.
As it is, the State of Texas is paying less for a Governor who no longer requires the State to contribute to his retirement account.
The ERS would be paying more if Rick Perry had waited five years to retire and watched his annuity increase by whatever amount it would be for the additional years of service. As it is, they've frozen the rate and that's what he'll be paid no matter how long he is employed. The State and ERS are done contributing to Rick Perry's retirement.
You're just pissed because he's getting almost double his monthly salary for the period of time he remains employed by the State. In the end, both the State and ERS are saving money by his early retirement.