The consumer and mid-level lenses from Canon and Nikon are pretty close to a dead heat, I think. If you're buying on price, it would be very smart to go to a store and actually handle the two cameras, to see which you prefer. You might find the ergonomics of one camera better than another, or you might find the viewfinder preferable on one camera or the other. The only areas where I think Nikon has a relatively undisputed edge over Canon is the ability to edit images in-camera on the Nikon, and the Nikon flash system's performance and versatility.
But seriously, you absolutely must hold and operate the cameras. One of the to will feel better to you, I can almost guarantee you. Both will take fine pictures.