I have been experimenting with Warpath on a Void Knight and noticed a couple of big discrepencies that do not line up.
Warpath’s advanced tooltip says it reduces movement speed by 20%.
My characters base movement speed is 33% normally and when I warpath it goes to 6% for a net loss of 27% movement speed.
When I have Devouring Orb up with Movement speed Node, I go to 53% movement speed, and when I warpath it drops to 22% movement speed for a 31% decrease.
Both of the examples above are above the 20% the tool tip states.