Next year I'm looking to enroll for an MBA to go into marketing after some years working in sales and getting a bit tired with the field. I'm looking at online programs since I want to continue working while studying and I need the flexibility.

I'm looking to study in a European school, since that's where I'm located and where it would make more sense. Does looking at regular MBA rankings offer a good way to judge online MBAs? (For the schools that do offer an online equivalent, of course.) Or can the quality of the on-campus vs. online programs differ greatly within a school? What about the requirements? Are they usually the same for an on-campus vs online program?

For example, would getting into the Warwick online MBA be as challenging as getting into the in-person one, or are they less demanding?

Thanks!