RE: Aresti question
Nope.
Aresti is redefining the way the rolls are labled.
2x4 is now 2pts of a 4pt roll.
2x8 is 2pts of a 8pt roll and so on.
3/4 is just that. three-quarters of 1 full roll.
I think this was too stop some confusion on rolling manuevers while trying to read the Aresti