Daenerys' and Daario's not-so mad, bad relationship.
In the book, Daario is much more volatile and dangerous, even as he's giving the Mother of Dragons flowers. But in the TV show, those flowers come with seduction and style. Why is HBO trying to make Daario a clean-cut made-for-television hero (Maybe because blue-bearded, gold-toothed Daario from the books is a tool? - Ed.)? Although Dany recognizes that he's not a good man, she spends a great deal of time in the books thinking about kissing him. She's still the primary decision maker in the books, but he seems to have more power in their relationship.
Plus, the sellsword doesn't defend Dany at the gates of Meereen; that honor belonged to the sadly unfilmed Strong Belwas.
Who did it better: The books. Strong Belwas!
But...Daenerys manages to kick a whole lot of ass on TV, particularly when it came to her fallout with Jorah. She ejects him from Meereen after learning of a letter from the late Robert Baratheon. In the book, it plays differently: Barristan Selmy, who was with Robert Baratheon when he received Jorah's letters, straight-up tells Dany that Jorah had betrayed her. Although they didn't interact much in the books, it was clear that Jorah had no love for Barristan Selmy.
Plus, here we see Dany chaining her dragons, while in the show, she does it off-scene.
Who did it better: The TV show, particularly when Dany kick very humbled and humiliated Jorah to the curb with barely controlled rage.