
What's Up with Ice Breaker's Perks? (Destiny)
So I picked up Ice Breaker from Xûr last week and been working on leveling it. I'm confused about the first and fourth tier upgrades, though, since they don't seem to to have any effect on the weapon's performance. I would expect that Accurized Ballistics, Field Choke, and Linear Compensator would at the very least all exhibit slightly different stat changes, but all of them seem to be normalized.
Here's a video comparing Ice Breaker's perks with the perks from my other exotics (note how every other weapon changes stats in the first and fourth column):