Decide time/energy required to read
Most readers read less than 300 words of an article. Then why force them to navigate them out of the homepage at all.
On click of an article, preview opens where user can quickly read through headline, excerpts and browser through image gallery.
A preview open also registers as as page view in google analytics.
Every article shows headline, image, reading time, icon that represents presentation (image or video). So even before clicking on the card, the user is aware of the type of content it holds.