They are both blueboard profiles, mid/mid.
I have played the s+ limited 2nd gen 70 in a driver (stock offering in the PXG driver, fwy) Also playing a AV Raw Blue 75 in an 0211 3w. Not apples to apples but they feel similar, specs are similar. Smooth and stable. Not sure if the s+ is the same as noted above.....there have been so many iterations of the blueboard, it's hard to keep track. I wish they had an 85 in the AV Raw Blue!