There is nothing really "Small" about a 5.8 iPhone, even if it is narrower or has reduced bezels. The S8 (5.8) is not competing against the iPhone 5.8 OLED model in some aspects. The Galaxy S8 launched back in April, where as the Note 8 is more in line of competing against the OLED iPhone because they launch closer together. The Note has always been the main competitor against iPhone Plus model since it's inception with the 6 Plus, because they were the two largest devices offered by both phone manufacturers.