What makes the difference between TC and B school

After John Merrow's speech last Saturday, one alumni who got a MBA degree after graduate from TC raised a question and mentioned the difference between TC and Business school. This question comes to my mind each time I went to Business school in Columiba. Different learning style, different 'students', and different interaction pattern. 

If we can compare the learning process between TC and B school, we will see the significant difference. What I am interested is what make these differences? The pedagogy? assignment? 'hard' and 'soft' environment? culture?