I don't know what happened to CRKT: Sharpest folding knife I can remember was a CRKT Appache, hollow ground blade with a hollow ground edge bevel on one side... I failed to maintain that edge though, as I didn't understand how to sharpen it...
Sharpest fixed blade OOB was something called the EK Warrior Bowie. Ugly as hell, and with a rickety guard that shook as you shake the knife... The huge handle you shape yourself was a stupid concept on a plain straight full tang... Hated it, despite its qualities.
But what does sharpness matter? Edge thinness is what matters: Thinnest big knife edge for me has consistently been Randall, especially the stainless ones...
Gaston