I really enjoyed Cinder but I didn't enjoy Scarlet as much as I thought I would.... 
 While Scarlet was nowhere near as predictable as Cinder, I found the first half of the book rather dull (the second half was action-packed and exciting though). The characters weren't any better either. 
 Is it just me, or is Scarlet exactly like Cinder? If you placed Cinder in a field and had her grow tomatoes, I would not be able to differentiate her character from that of Scarlet's. They're both strong independent females who would sacrifice their lives to save their loved ones. Even their closest friends, Emilie and Iko, have similar personality traits - flirty and buoyant. Also, they both fall in love way too easily... which leads to my next point. 
 I found the instant romance between Scarlet and Wolf absolutely ridiculous. There wasn't any chemistry. None. Nada. All I took away from their relationship is that Scarlet is scared of Wolf and fear/anger just somehow turns into sexual tension and lovey-dovey feelings. Stockholm syndrome much? 
 It also makes absolutely no sense to me that no one seems to have figured out that Cinder is Princess Selene. Although Prince Kai seemed interested in conspiracy theories, I can't believe he hasn't put two and two together yet. Which leads me to my next question: Why aren't there any conspiracy theories that Cinder is Princess Selene? She's all over the news, and there's even theories that she was at the ball to target Queen Levana. It's clear that Levana wants her head, so why hasn't Kai or anyone else figured it out yet?? 
 Verdict: Lunars are clearly the smarter species in this series. They deserve to live while humankind perishes from stupidity and insta-love.