The deciding factor between the new IIMs is significantly lower than JND. Take a decision while keeping yourself in mind, because all new IIMs (Rohtak, Ranchi, Raipur, or Trichy) are equally good.
Because of regional industry coordination, IIM Rohtak has an advantage over others if you want to settle in NCR.
Old is gold, and it is the oldest of the new IIMs, with a larger batch size and a larger alumni base. None of the new IIMs have their own full-fledged campus, unlike MDU. However, IIM Rohtak employs MDU infrastructure that is superior to that of many older IIM campuses, while newer IIMs require decades.