Fiedler and his associates bring out the contingency theory which combines leadership style and situation during 1960s. In Fielder’s model, the good performance of the group depends on the interaction of the leadership style and the favorable situation, and a good leadership must be flexible and adaptable in order to appropriate different situation within the organization no matter how hard or soft situation (Huczynski & Buchanan, 2007). Thus, there is no single style of leadership which can match to all situations; even the most effective leadership behavior should depend on the situational factors. Hofstede (n. d.) commented that: Western countries have characteristics of high individualism, medium uncertainty avoidance, high masculinity, low to medium power distance, and low long-term orientation. [Thus, based on the situation, it is best for Jeff Bezos to practiced participative leadership style in USA. On the other hand, eastern countries such as Japan] was found to have characteristics of low individualism, high uncertainty avoidance, high masculinity, high power distance, and high long-term orientation Hence, it is more appropriate for Akio Toyoda to practiced autocratic leadership style to suit the cultural and situation at Japan. In order to compare the different culture of USA and Japan, Hofstede’s Cultural Dimensions of USA and Japan will be as the following (Hofstede, n. d.): Source: Geert Hofstede, Cultural Dimensions, www.geert-hofstede.com 3.0 Conclusion In conclusion, it is undeniable that Jeff Bezos is a great CEO which made Amazon a famous and innovative online company globally. However, it is too narrow to believe that charismatic leader is everything since Akio Toyoda is still a great leader without being a charismatic leader. Jeff Bezos is a charismatic leader, it might be his style to be one, but charismatic leader style is not suitable for everyone or in different culture, background and country, it might not be essential. Therefore, there is no one universal accepted leadership style that is the most effective one. Great leader are not only charismatic leader, anyone who was seen as a great leader, no matter what his leadership style was, is nothing less an effective leader if they were not quoted as one.>