LG G5 wins in:
>Better Camera >Removable Battery
>Cheaper Price >Fastest reactions
>Modularity >USB Type C
>Better Audio Perfomance
 Samsung Galaxy S7 Edge wins in:

 >Design
 >Camera Stabilisation
>Selfies
>Better Quality of Body (overall)
>Higher Battery Capacity
>Fast Battery Charging S7/Edge looks nice, but I prefer LG G5