This is probably a very simple question but it's not clear to me.
The Mapbox docs say:
When you create a project from the editor, Retina (high resolution) tiles are automatically used on devices that supports them. If you are using Mapbox.js, retina tiles are always automatically used when available. No extra code is necessary.
Yet my projection looks fuzzy compared with the map in my Mapbox Projects section.
I use mapbox.js and .css:
<link href='https://api.tiles.mapbox.com/mapbox.js/v1.0.0/mapbox.css' rel='stylesheet' /> <script src='https://api.tiles.mapbox.com/mapbox.js/v1.0.0/mapbox.js'></script>
Here are pictures of the respective maps:
The projection (made with Leaflet):
The project as it appears on Mapbox.com's "Project" page:
What mistake am I making?