I would imagine that the stiffness difference may be a result of strung versus unstrung frames. 11.7 is more along the lines of being correct. 12.2 doesn't happen on that frame w/o lead.
But in the end, those numbers can't be applied to your specific 7G. It's like askingsomeone who has the same year,make,
and model of car as yours what their gas mileage is.