First and foremost, they are paranoid about the fact that speed matters more than ever in a quickly changing world. (seytlines.com)
In automotive terms, top speed matters much less than a player's 0 - 60 time. (sbnation.com)
Sequential write speed matters when shooting photos and video directly to the card, and sequential read speed determines how long it takes to transfer files from your microSD card (to your computer, for example). (thewirecutter.com)