OK, thanks, I see now where I was getting off in my thinking, and got similar numbers in a spreadsheet.Btw, if that was too much complexity you can assume your light bulb is the only thing on the line and calculate it that way. Then it is:
81.5 W if you include the line loss.
78W if you include the line loss and power factor's contribution to it.
I'm correct that the PF causes some additional loss not captured in the residential $ savings label. So a CFL/LED with a PF 0.5 will cause the power plant to produce a few more watts than the same wattage CFL/LED with a PF of 1.0.
But due to the even higher IR grid losses with the 100 W filament bulb, the savings in fuel at the plant is even greater than the labeled watt delta would indicate. I didn't take my comparison far enough. And thinking in terms of 8% average grid loss threw me off, I needed to think in terms of each current's effect. There is some relatively fixed R in the lines, so less current means less % loss as well, the grid R is a smaller R relative to the CFL/LED.
I'll check out the other links that were provided along the way a bit later.