Spoilers warning!!!
In the Ep 3 novel, some of the dialogue is almost as atrocious (if it's accurate to the script). One scene has Padme begging Anakin to run away with her, sounding like a little teenage gir, after he's massacred the Jedi temple (younglings included). Hardly the words you'd expect to hear from a tough planetary ruler who's defied a galactic senate in the past. Obi-wan warns Mace and Yoda to not put Anakin into a position where he has to choose between two camps for his loyalty, yet they go right ahead and do it anyways. And Anakin comes off as a complete dolt, an easily manipulated pawn whose fall was as difficult to precipitate as handing candy to a child and telling them not to touch it. The characterizations are just fingers-on-chalkboard amateurish.