Not replying to any post directly, just using this is a spot to share some weights since I couldn't find that information anywhere. I had some time on my hands after being frozen into the house for a few days. All cranks are 30 mm spindles and 175 mm length (not that crank length impacts weight of cranks).
The Quarq Prime carbon fiber crankset weighed within 4 grams of my Force 1, so I'm fairly sure the Quarq is just an 8 bolt version of the Force.
The Quarq prime aluminum crankset weighed 200 grams more than the carbon fiber one. Ouch. It's a re-branded Rival with the updated 8 bolt power-ready design.
I weighed them without any spaces, bolts or spiders just to get comparisons vs. absolute weights.
Several sites list the Quarq and the Red Prime / Power-ready cranksets as the same weight. There's some stuff about "Exogram" carbon fiber being used on the Red vs. the Quarq, but Exogram always referred to the hollow, one piece crank arm and spider design, not the type of carbon fiber. Even the ST article says they are different, but I don't think that's correct.
Boring pictures of my food scale here.