Yeah, All Wheel Drive is much better than Rear Wheel Drive, especially in rough weather.
…Oh, wait, you’re talking about web design.
This is mostly marketing and semantics. I just took a course in RWD. My takeaway is that there isn’t a whole lot of difference between AWD and RWD. It’s a tug of war over words. The people who are invested in one term more than the other tend to oversimplify and downplay the alternative term, and vice versa. Take any one feature of either, and you’ll probably find it included as a feature of both in one place or another on the web. But if I had to choose, I think adaptive is a more accurate term to use, although not as popular.
In this case it’s best to be more specific about the features included. Terms like liquid layout, scalable layout, or multiple versions of a layout are more to the point. Whatever works best depends on the type and amount of content on the page.