I am using the skill simulator on tosbase and the description says the Barbarian’s Cleave increases Critical Rate by a flat 50. In these translated patch notes however, it states that the skill increases Critical Rate by 50 %.
Does anyone know which description is legit? Is this a typo on tosbase?
Circle 1 - Cleave - A circular slice which cleaves enemies in front of you. Slash damage. Successfully hitting an enemy with Cleave grants the Aggressor buff (raises Crit Rate by ~50% ONLY) for 5 seconds at maximum. [It apparently has been changed since 1st of Oct. Patch.] 2 uses before cooldown. (Overheat) - Video: http://w.webms.org/m/DB9HjwLE.webm
Source: https://www.reddit.com/r/treeofsavior/comments/3lfg9l/new_kcbt3_skill_additions_and_changes_summary/
It’s definitely +50% Crit Rate since I last used it.
Based on the skill tooltips, it hasn’t changed either. Though, I do not have a Barbarian C1 to confirm it myself since the server wipe. 
I think @FatePGN has a Barbarian currently on the test server, he can probably confirm it.
Thanks a lot for the answers!
