The standard S6 / S7 was a great option for people who wanted a more traditional screen and had no use for the features the S6 / S7 Edge variants offered. (android.gadgethacks.com)
Still, when compared to the sales of the standard S7, the curved edge variant was more popular than its counterpart. (nashvillechatterclass.com)
The larger Edge variant also brings dual - curved edges on either side. (9to5google.com)