Should I study Marketing Management or Information Technology? Which is more marketable or is it the same?

They are both very good majors. The IT degree can place you within a very broad range of IT related positions. Marketing Management is also a very good mix of marketing skills as well as business management. They are also lucrative careers by nature as they are growing fields for these two areas. E.g. IT positions are holding fairly steady even in this economy and even expecting within the next year according to one report. Marketing will always be popular due to clients that need to get their compelling message across to sell their products / services. I recommend that you possibly if you can, try doing a free, short internship in both of the above disciplines and see which one you like more. Usually your gut feeling dictates which one you will pick. They are both very marketable.