It doesn't exactly have the high caliber perk. They buffed its ability to stagger back before the dark below came out (basically the same thing) because it wasn't very good in pve. After the stagger was buffed you could stagger an ogre after several shots! As far as PVP is concerned, the gun has been unchanged in over a year. People used belittle Mida users in the crucible because it wasn't a very good weapon (some players knew better). The fact is, the weapon is very well balanced, not op, but every other weapon type has been nerfed to hell making Mida seem that much more powerful.