SCAT superlight crank

Just got my new SCAT superlight crank. This is an RB crank with 4.250 stroke and 8 bolt flange. It weighs 64 lbs which is about 5 or 6 lbs lighter than usual. Nice looking crank, I like the extra features on the superlight version.
View attachment 1715250956
Andy, pretty sure my Molnar 4.250LD crank weight same as my 360SB 4.00 Eagle crank which was 63# and the Molnar is not considered light weight. Different alloys between Scat and Molnar?