Why is stitching solution better than one shot?

According to our experience, the image quality of one shot solution is much worse than stitching solution. Here are some reasons: 1. The image resolution of one shot solution is much less than stitching resolution. 2. Only cylindrical panorama can be created with one shot solution, whereas spherical panorama can be created with Panoweaver. The user will get much interactive feeling with spherical panorama with ceiling and floor.