NoI was in in the same dilemma last year.
Well, i would not strech the answer and will keep it upto the point.
Campus life-both of them have a different culture, you’ll enjoy the place no matter which one you choose. Muj is comparatively small to Mit, this factor has both +ve and -ve aspects.
Facilities- muj hands down has better infrastructure and campus facilities as compared to Mit. Muj being fairly new is able to achieve this.
Surrounding- With Mit you get a pleasant surrounding, kind of excluded from main cities but with Muj you able to enjoy the heart of Rajasthan around you.
Weather- Mit has a humid kind of weather amd recieves a large amount of rainfall every year. Muj has the classic Jaipur weather, which is warm in the afternoon, pleasant in the evening and windy at night.
Hope this helps.