Legendary and Uniquea Identical Stats?

I fought mouthpiece during the event last week and I got him to drop several copies of 3 of his drops but every time it had identical stats. Did they change how legendary and unique drops work? Will we always get identical stats? Or is it because they have so few components that make up them we’re more likely to get the same ones multiple times? This is ofc only for guns and equipment of the same level but I can’t seem to get different stats on farming. Has anyone else experienced this?