According to MTV:

Indeed, “The Hunger Games” is more than “not bad” — it’s great. It might even be exceptional. In fact, I’m ready to call it: Respectfully, I strongly feel the “Hunger Games” movie is better than the “Hunger Games” book. Before you kill me, hear me out, and I’ll try to walk you through my reasons.
» In the movie, you see everything. Though the book unfolds entirely through the perspective of bow-wielding heroine Katniss Everdeen, the “Hunger Games” film is free of that point of view and allowed to explore other characters operating much further away from our lead. If you were wondering how Haymitch wrangled sponsors in favor of Katniss during the games, wonder no more — the movie has the answer. What’s Gale up to while Katniss is busy fighting for her life? You’ll see. Cutting free from the Katniss POV allows for a freer story, opening the already huge world of “Hunger Games” in an even huger way.
» Purists, don’t sweat it; you won’t miss Katniss’ narration. Yes, experiencing everything from your front-row seat inside Katniss’ mind is a huge draw in the books, and it works in that medium. Here, we get our Katniss fix by different means that make more sense on film — namely, through Jennifer Lawrence’s performance. An amazing, emotional, impactful performance, I might add. Initial controversy aside, the decision to hire an Oscar-nominated actress to play the lead role in this young-adult action/adventure was the greatest call made by the “Hunger Games” team. Lawrence lets you into Katniss without ever once telling you exactly what’s on her mind. She plays the character in such a way that you see her brilliant moves coming but are still surprised to see how her actions unfold. Lawrence is Katniss, and she becomes her without revealing a single thought out loud. It’s impressive stuff. Also, the Katniss perspective — her overwhelming emotions and thoughts and experiences — still comes through, not just by way of Lawrence’s work, but also Ross’ ability to weave different elements together, from sound to cinematography and beyond. Katniss’ experience is a dizzying one, and even without her thoughts beside you, you’ll experience plenty of that same dizziness firsthand.
Source: Hggirlonfire.com