Could Herman Cain's mysterious economic advisors behind the 9-9-9 plan actually be the simulated advisors of SimCity?

Terkel writes:
"Long before Cain was running for president and getting attention for his 999 plan, the residents of SimCity 4 -- which was released in 2003 -- were living under a system where the default tax rate was 9 percent for commercial taxes, 9 percent for industrial taxes and 9 percent for residential taxes."