Two old maps sit side by side, and Tokyo is covered in dots New York barely has. You cannot tell what the dots are, only that one city has far more. The title says this gap means better design, so you need the reason.
How the packaging works
Title
The title makes a bold claim and promises the reason behind it.
Thumbnail
The thumbnail shows the evidence as two labelled maps without explaining what the dots mean.
Remix this
Use this when your point rests on a real measurable gap. Show the two cases side by side as raw data, label each one, and let the title ask why the gap exists.
The transferable lesson
Show the unexplained data, let the title promise the why.