isn't Cruel 200-300%?
Its a terminology thing.
with fools mod max ed is 300 before jewels, and these weps are typically called "fools"
without fools mod max ed is 450 before jewels, and these weps are typically called "cruels"
likely a carry over from the 1.09 days when a recipe existed to get max 300 ed and 3 os. so they'd be 40ed/15ias jeweled or Eth rune combination to have similar ED but no fools mod.