The original Bullet Storm skill could hit EVERYONE in that small radius when he sweeps back and forth meaning it was an AOE skill that could hit potentially 5 players if bunched together for up to 5x damage (tho 2x or 3x is most likely).
Then it got ‘upgraded’ to an individual targeting skill with just a negligible attack boost but still a huge drop in overall damage. Unless you’re always in a 1v1, the legendary skill should not fair better than the original.
Also the change of ‘Root’ to ‘Stun’ sounds good on paper, but if you realised that enemies get staggered and interrupted every second during the the original Bullet Storm’s duration then it’s pretty much the same effectiveness of completely stunning the opponent like Bullet Hell does.
So, overall damage loss plus no effective difference from status effects makes me wonder how the heck it’s supposed to be an improvement. I guess Level 3 armour boosts could make up for that a bit, but if that’s the case then, once a common/rare armor comes out without the skill then I see no reason left to use the Legendary skin.