I did my MBA at LETU on ground and would agree that the interaction in class was a tremendous benefit. I have friends taking their MBA online and it seems to depend on the passion of the students in your course as to how much you learn from the material.
I would ask your enrollment counselor for names of people who have completed the online program who would be able to tell you more about their experiences.
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Online MBAs are not highly regarded. They may even cost you a promotion if your judgment comes into question.
The value of an MBA comes from in-class communication among students and teachers. This is very difficult to convey on-line.
The only on-line MBA which has world-wide good reputation in the Heriot-Watt MBA.