BIT Mesra Jaipur campus is one of the seven extension campuses (Jaipur, Deoghar, Patna, Lalpur, Noida, Muscat, and Ras Al Khaimah) and one polytechnic school managed by the BIT Mesra deemed university. Now it will be unfair to compare an extension campus to the main campus of any university as the overall quality of the extension campus always tends to be less than the main campus.
Now, the Jaipur campus of BIT Mesra is worth joining if you are looking for a brand name and a college with average output (this campus is still in the development phase). However, do not expect the level of quality offered at BIT Mesra. You may even consider joining some better-ranked and better-equipped state-level colleges in the vicinity.