I found this
"Given Samsung’s strong camera performance with the Galaxy S6, it’s probably not too surprising to find the S7 Edge comes out on top here. It doesn’t get an easy ride though, as if outright detail is of prime concern, you’re better off with a Pixel XL.

Ultimately Samsung beats Google because of the S7 Edge’s far more powerful camera app, a slightly more accurate screen preview when composing shots, and extremely impressive low light performance with flash enabled."