Sentiment analysis shows Trump's real tweets are scared, angry, and sad!

There's an unconfirmed (but pretty solid) theory on how to tell apart genuine tweets from Donald Trump tweets from those written by his staff. We know that Trump uses a Samsung Galaxy smartphone, and looking at data from Tweetdeck we can see that tweets from @realDonaldTrump sent via Android read and sound very differently to those sent from an iPhone.
Now, a data scientist has added more compelling evidence to this theory, analyzing the language and behavior used in the two types