Somewhere at Samsung's sprawling campus, deep in the headquarters of the mobile phone division, there is a PowerPoint slide with a simple line graph. On one axis is "sales," and on the other is "screen size." The graph shows a positive correlation between the two.
This graph has no extra information or context. It does not note that the marketing budget for Samsung's enormous phones is much larger than for the smaller phones. It does not note that Samsung also, typically, reserves its best hardware for its large phones. It does not note that Samsung no longer even makes flagship phones with screens smaller than about 4.5 inches.