The JYD II is a much bigger knife than the R.A.M.
The flipper on the JYDII works exceptionally well while
the R.A.M. flipper system is more in line with the speed of an automatic.
Completely different blade design. The R.A.M. has a choil cutout if you like that sort of thing.
Both can be had in G-10, the JYDII's G-10 is a bit grippier.
JYDII is right-hand tip down while the R.A.M. is right-hand tip-up or down and left-hand tip-up
The HAWK lock is a piece of art in itself.
JYDII is available in Black or Grey G-10 (Black G-10 for the CB model) and Ti if you go for the SG2 steel model.
The R.A.M. is available with or without serrations in a plain or black finish blade.
I think that covers it.
mike