There is no verse equalization with those 2 power systems as they
don't function/act the same and aren't the same thing
Haki itself is a power that turns ones "Will" into a weapon and that weapon is turned into 3 utilizations... Obs Haki, Arm haki and con haki
Like Haki is basically (in the Naruto verse for example), if Naruto wanted to use armament Haki, he would be utilizing it by using his will to fight, or if he wanted to use obs Haki, he would utilize his power to feel/sense others and that goes into different ways... Like sensing their
will of attack,
Emotion or sensing their life energy
It's basically just utilizing things ("Presence", "fighting spirit" and "intimidation") that
already exist in everyone to a degree that's supernatural... That's Haki. Chakra however is a literal
manifested energy by combining
one's "stamina" and ones "mental".. That's just a completely different power