Now, onto the comparison.
So, I say they're dupes. As dupey as you can get. If you have OPI SSFS I say skip on Breezi. Formula is comparable and what's the point of getting two of the exact same thing? And if I had to be completely honest, as much as I like Breezi, if I remembered I had SSFS before I ordered I wouldn't have gotten it. But if you have neither and want to get a color like this, you really can't go wrong with either one.
Whew, I think that's it. The pictures really don't show just how alike the two polishes are. This is the first dupe in my collection. I feel...weirdly happy about that. Like, I'm finally collecting enough polish to have dupes. I got issues. :)