Lenses are big business.
"For today's 14-to-25-year-olds, Snapchat is the new Facebook, in terms of user engagement, market penetration, mindshare"
I'm not saying it's untrue; I would just like to see some reliable data to back this up. Anecdotally; most of the teens I know are using Instagram rather than Snapchat, whereas the people I know using Snapchat are in their mid 20s to mid 30s.
Fortune's April article [1] on the investment firm Piper Jaffray's 'Taking Stock with Teens' survey [2] shows that in their Spring 2016 survey Snapchat has tied or surpassed Instagram for most important social network among teens; the article includes a graph of the last 3 surveys. Mediakix, which specializes in social influencer marketing, publishes periodic assessments aimed for marketers about the social networks -- with sources. In January they compared Bloomberg and Fortune articles to conclude that Snapchat's video views surpassed those of Facebook [3].
[1] http://fortune.com/2016/04/13/snapchat-instagram-piper-jaffr... [2] http://www.piperjaffray.com/3col.aspx?id=4035 [3] http://mediakix.com/2016/01/snapchat-statistics-2016-markete...
I'm surprised you wouldn't bring the biggest difference - the data. Facebook had tons of user data, even at their IPO, while Snap has relatively little.
To many advertisers, the Facebook ad platform's sophisticated audience analysis isn't so much value-add as a way to prune people unlikely to be interested from being shown your ads. This is why the comparisons between Snapchat and MTV are apt.
There are some important differences, of course. Facebook owns multiple properties that mount competition to Snap Inc: Instagram, Messenger, Whatsapp, the original Facebook; Snapchat subsumes all these usecases in a single app that you'd be hard-pressed not to find on a teen's phone today. And it does so by making it optional to curate a permanent, indexable, discoverable, idealized public identity.
To many, that's strictly better than anything Facebook has put out -- a company that nonetheless commanded a high valuation, performed an IPO (albeit rocky), and now posts a strong profit.