All it does is slightly increase the slam radius for stormboy. Also, the ingame model doesn't match the thumbnail image. Sadly the thumbnail image looks more awesome with the twin rotary saw blades......drool.
That was actually changed so that the thumbnail looks as cheap as the in game model. I think they are starting to crack down on the thing I scream about most which is our in game models never EVER match our concept art. So instead of fixing it they are just replacing the concept art with the downgrades lol.
Its supposed to trick new players in to wasting LP on a weapon that looks cool but actually sucks.. Like most ork unique weapons.
Honestly I think it's just a flimsy rushed weapon they threw out there like most ork weapons we have. We still have weird weapons bad animations klunky controls and massive hitboxes lol. So yeah throw a useless torpedo axe that's never frekan worked ever and you got a crap sandwich worthy of choking down.
'cause I ain't gotz me burny choppa or ghost choppa yet, I been usin' dis fing in me uver stormboy kit. Da two fingz it actually doez ok at is be cheap enuff for me ta slot all da rokkit gubbins I can fit, an' make da slam radius as big as I alwayz finkz it iz, but never turnz out ta be normally. Much as I use it, I shout at it a lot for not bein' betta den it iz. Fing is ugly, dough. Not a proppa choppa for a flash git like me ta be sportin' inta battle.