Hello aspirant, both of the colleges have their own opportunities and placement concerns.

NIT works as a name itself in many concerns of placements . IT is one the best branch of engineering.

IIIT jabalpur is one of the few colleges in MP to pride good engineering plus CS is the topmots best branch of engineering .

I suggest you to go up with NIT because it will be a more opportunistic approach for you. 

All the best