It is impossible to predict with any certainty who would have won a hypothetical World War 3, as there are a number of factors that could have influenced the outcome. Some of these factors include the countries involved, their military capabilities, the strategies employed, and the availability of resources. Additionally, it is impossible to predict the effects of unforeseen events such as natural disasters or technological advances. Therefore, it is not possible to provide an accurate answer to the question of who would have won World War 3.