Cheesypoof999:

Booban:Greande on the hog is the same grenade infantry use. They are all the same.

 I'm not 100% but I remember them saying they are two completely different things, and that Hogs and Wolverines will not be affected.

They are the same, when the balance patch goes live Wolverines will do 25% more damage against warthogs with their grenade launcher.