I have some of the new Xray oil have not gotten to test it yet. Here is what I can tell you. I have tested the old Xray "W" oils and they are really close to what they rate them in CST. I would assume for now the new oils are close to their CST rating as well, so you can use this chart I did from losi oil to get a close answer to what you are asking.
As you see the 70wt is heavier than the 80 wt. I have had this happen before and it varys from batch to batch. When I built up shocks with 70 and 80, for sure 80 was lighter.
AE oil might be different than losi I have not tested that yet.
Hope this helps.
Serpent America, Picco, Blitz Bodies, Team Titan, Desoto Racing, LRP, Motiv, J Concepts, Nitro Pro fuel, PT RC Racing Oils, TQ Wire(best wire ever!), BSR tires, Arrowmax, Xceed, Sanwa.