Most previous approaches to spiral water-fat imaging perform the water-fat separation and deblurring sequentially based on the assumption that the phase accumulation and blurring are separable. A joint water-fat separation and deblurring method has been recently proposed using more accurate signal models. In this study, the sequential and joint methods are quantitatively compared. Simulation and experiments have demonstrated that the results of the joint method are significantly better in regions where the field inhomogeneity changes rapidly in space. The loss of signal-to-noise-ratio is minor for both approaches at optimal TEs when the noise in the field map Δf0 is negligible.