The screen resolution on both the S8 and S8 + are higher than its predecessor and with fewer pixels per inch. (venturebeat.com)
To explain: both the 4.5 - inch and 5 - inch versions of the Moto G have 720p resolution screens, meaning you get far fewer pixels per inch in the larger model. (techradar.com)
If the resolution is low, that means there are fewer pixels per inch, which means each pixel is automatically made larger. (archwaypublishing.com)