It's difficult to reconcile the Flurry stats with the fact that most blogs / publishers are seeing a higher percentage of their traffic come from mobile web (>50% in many cases).
One reason could be that their stats don't include mobile web usage within apps (i.e. FB / Twitter). That discounts a lot of my own browsing behavior.
Also, as someone pointed out in the comments of the article, if you count video games in the "time spent in apps", then really it's the gaming consoles and devices that are losing out, not mobile websites, so the discrepancy between web and apps is overstated.
As always, look at the data for your own website/service before deciding which path to take.
One reason could be that their stats don't include mobile web usage within apps (i.e. FB / Twitter). That discounts a lot of my own browsing behavior.