Straw Dogs Trailer

So they've gone and remade Straw Dogs and moved the setting from rural Cornwall to rural Mississippi. I can live with that if the message is rednecks are rednecks everywhere. I'm really not sure what to make of this trailer. James Marsden is no Dustin Hoffman but then who is. Kate Bosworth is also no Susan George. From the trailer it looks like a fairly close to the original remake - which begs the questions: why bother to remake it and why film it is Missisippi?