Who cares, both copy each other. It is what it is...
Samsung really needs to bring back expandable memory in the S7. Its the main reason I haven't got the Note 5 and deciding between the LG V10 and 6S Plus as im extremely long overdue 4 years for a new phone..
Not gonna happen. They, like Google with the Nexus, have realized that it's far more profitable to charge for the storage than let users add their own.
It also means no headaches with dealing with running apps from memory cards and the "where is that file stored" problems they see. Much less support crap to deal with.
With things going more and more to the cloud, most users don't need the internal storage as much. The average user uses less than 10 apps a week. There isn't the need for storing a million apps and most of the other stuff goes in the cloud.