Following are links to spec's for each (scroll down) and then a discussion of such...
https://www.atsacoustics.com/page--Selecting-the-Right-Acoustic-Material--ac.html
https://gearspace.com/board/bass-traps-acoustic-panels-foam-etc/670883-knauf-product-equivalent-oc70...
DeKay
https://www.atsacoustics.com/page--Selecting-the-Right-Acoustic-Material--ac.html
https://gearspace.com/board/bass-traps-acoustic-panels-foam-etc/670883-knauf-product-equivalent-oc70...
DeKay