Well I realized I didn't have a clear idea of what the difference in power consumption would mean, and lets face it... AMD's Vishera is competitive in all other respects. I got the math wrong about a dozen times, but I finally got the right results after finding a calculator that jived with my excel table results.
The problem for AMD is that my numbers were for the i7 3770K. The FX-8350 competes directly against the i5 3570, which actually offers 20 watts lower power draw than the 3770K I reference.
If a person turns their computer off at night and doesn't usually run intensive workloads constantly then AMD's FX-8350 is still a better buy at its price point, and the power differences won't amount to very much. But again Vishera is an eight-core chip... it would be a little unusual to recommend an eight-core chip for someone that hardly uses their PC!