And you're saying that 17k on Amicable Numbers = 12k on Einstein@home, and so the rest of the calculations follow from there? (and ultimately, we only need the information we already have publicly available?)

Only partly, as from project data (RAC, boinc credits) you don't know how many hours / day card is working plus other unknowns. Thus it would need to be averaged by the runtime of particular projects - assuming these are consistent between projects, i.e. counted the same way. Without control on reference computer it is chasing a carrot on the stick. Like WINE for Linux is chasing MS Windows compatibility. And will never get there. I run both of these projects so can make quite accurate calculations.

I'm not sure I understand this fully. Can you please elaborate on the equivalence between CPUs and GPUs?

Should be Therefore it can earn as many credits at yoyo as GTX1060 at any FP32 GPU project. Equivalence between CPU and GPU - a computer based on Ryzen 7 1700 and GTX 1070 should earn similar amount of credits on both GPU FP32 project and CPU project. How to choose ( reference CPU and GPU) would need further research and community agreement.

Of course GTX1060 is a shorthand for ~ GTX1060 based computer; components cannot hinder card's performance.