You are probably not using it the for the way it was intended. Flipboard makes feed reading (whether they are from a blog, rss, twitter, Facebook, instagram, etc) much faster for several reasons. It simply loads a lot faster the more you use it because as it tries to learn what sources you tend to use more often and what articles you actually want to expand. Loading images and text is nearly instantaneous as you flip through, where a rss reader will typically load only when you tell it do. But even more importantly, flupboard improves the skimming experience tremendously by using great typography, images, and layout spacing. Skimming through a scroll of text is just much more difficult if at all possible.
Another important difference is Flipboard's great use of gestures. Tap an article to expand, flick up to see more, flick down to go back, two finger tap to close article, pinch to zoom in and out of videos. The UI is arguably better because, for example article boxes are designed to be very easily tapped and they make great use of iPad display everywhere. The combination use of gestures, subtle transition animations and smart loading makes reading not only faster but more of a pleasure.