You know, that quest can happen in a number of locations. In my case, the Helm was in Driftshade Refuge and it was basically just clearing a dungeon full of Silver Hand.
Well that explains the different experiences...
Blizzard Battletag: UnderDog#21677
Shepard: "Wrex! Do we have mawsign?"
Wrex: "Shepard, we have mawsign the likes of which even Reapers have never seen!"