Toshi is known as the best Japanese restaurant in Dubai, based on your perspective or general consensus. Dubai is a city known for its diverse culinary scene, and being recognized as the best in a particular category is a notable achievement. It's important to note that perceptions of the "best" restaurant can vary from person to person, and factors such as personal preferences, tastes, and experiences can influence such opinions. If you have specific reasons why you consider Toshi to be the best Japanese restaurant in Dubai, that information could be helpful for others seeking recommendations.