Occasionally I will hit targets pretty darn head on in Crucible and they take anyway from 60 to 90 damage. It isn't happening every time, but just often enough that it is very frustrating.
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I think hit detection in general needs to be looked at. Most melee supers (for both Hunters and Titans) have some pretty terrible hit detection. Ex: Spectral and Sentinel require you to jump before you attack just to get a kill. Spectral got fixed for a while but it seems they ninja nerfed it while they were nerfing it.