An MSc, or MBNA are much more useful outside of Flt Ops if you decide to move to another department.
I know both institutions well and work in both the industry and academics. I recommend people to go for a general MSc or MBA if they want to advance or are interested in the business-side of things. Aviation master degrees, or nearly any specific master degree (e.g. tourism, hotel, etc.) are often very specific that you narrow your field. However, if you go with a general program you understand the basics and can apply them to any field, e.g. aviation. As O'Leary says roughly in one book: pilots and aviation nerds only care about airplanes and just repeat the mistakes of others; look outside the box for inspiration.
You won't go wrong with a MSc in Aviation Mgmt, especially at those institutions, but if you want to do something outside of aviation, or in another department, as quoted, you may have a tough time selling your skills.
That's just my viewpoint though.