I've eaten in several restaurants that claim they serve Asian fusion food, when I would say instead that they are Pan Asian. To me, these terms are not interchangeable:
Pan Asian: The restaurant's menu includes recognizable dishes from various Asian cuisines. For example, Vietnamese pho, Korean bibimbap, and Thai red curry might all appear on the menu.
Asian fusion: The restaurant blends elements of two or more Asian cuisines (or elements of Asian cuisines with those of non-Asian cuisines) to create new, imaginative dishes.
Am I making an artificial distinction that doesn't follow generally accepted usage?