Devotion Proc chance?

When i was playing GD at a friend’s house, his Falcon Swoop was procing like crazy. I hovered over it to see 100% Chance on Attack (attached with War Cry).

He said he stumbled over it and doesn’t know how it works.

When i messed around a little and decided to attach it to Blitz, the proc chance became 51%. And dropped to 15% (maybe) when attached to Cadence

Can someone explain this? (My guess it’s got something to do with the skill’s cooldown, so it’d be helpful if someone has a cheat sheet)

Proc chance of devotions are affected by the cooldown of the skill that its attached to. The higher the cooldown the higher the chance to proc.

Ty /10 char