Hi Pavi,

MBA opens up a lot opportunities itself. If you ask me, i would say there is equal opportunities available in both the fields. If you pursue HR Marketing, you will have to work and manage sales and handle how different commodities are marketed. There are so many brands in the market and every company need marketing HR. 

However HR Logistics is more of a desk job, Taking time to calculate what commodities should be placed and so and so.

So, you can see both have scopes, you can choose whatever you feel more interested in.

good luck

these links might help:  Marketing Management Scope    Marketing Management