According to some of the people I know from BIT Mesra, it is not comparable to Thapar. You can compare BIT Mesra with reputed NITs like NIT Warangal or Trichy. 

Here are some important aspects of the institute. 

• Every engineering and management student looks for good placements in an institute. BIT Mesra will not disappoint you in that regard. It has a good placement record. 
• The academic environment at the campus is quite good. Now, if you are n IT/CSE student, then BIT Mesra will provide you a very competitive and learning coding culture.
• The college ensures good discipline among students. 
• After the compilation of your degree, you will be recognized as a student of one of the most reputed institutes in the country. 

The table below gives a brief comparison of the institutes. 

Going by the above points it is safe to say BIT Mesra has an edge over Thapar University.

IT In IIIT- Allahabad is a great choice. It is one of the best colleges in India for this field and branch. The course structure is amazing and polished and focuses more on topics related to IT. The course emphasizes practical applications. There are almost no courses that are out of the sphere of field.

The labs and infrastructure are one of a kind and the student culture in IT is very motivated. Most of the students start taking part in competitive programming right from the 1st or 2nd year. If you find coding really interesting and see it as a career, then you should definitely go for IIIT-Allahabad. The coding culture is awesome and people praise it a lot. You will love the college for its study environment. If you feel the passion and love for hardware-oriented work, you should definitely go for ECE.

Placements:

• The placements for IT are really good. They have top IT companies or firms visiting the campus. 
• Some of the top companies are Microsoft, Facebook, Adobe, Flipkart, Amazon, Directi, etc. offers a great package. 
• 2020 batch received the highest package of 43 LPA and an average package of 20.83 LPA. 
• The college’s reputation is growing significantly year by year.

Seeing the wonderful coding culture, the growing alumni base of brilliant minds, and therefore the previous records of placements from IIIT- Allahabad, there’s no lookout for any other college if you intend to be a part of this one.

Talking about the disadvantages, the campus doesn’t lie in the proximity area of any big city or town. The proximity to a metro city nearby is a huge problem. Though BIT Mesra has the same issue, hence I feel that both the colleges are even. A journey to Delhi by train takes a lot of time, probably a one-night trip.

Well, one of my friends is studying at BIT Mesra and according to him, it is a very good college especially for CSE. 

• The teachers here are very good and experienced in their subjects. Professors like Arun Sir and Mustafi Sir are great and helps the students a lot in completing their projects. They are always ready to help anyone irrespective of their branch or year. 
• There are coding matches held every Saturday at the campus and many workshops are also conducted by ACM which turns out to be very profitable for the students. These are great interactive ways to learn and practice new things.
• The placements are also amazing as top companies like Flipkart, Amazon, Practo, Coupon Dunia, Goldman Sachs, Snapdeal visit the campus for interviews, and offer packages more than 10 LPA. 
• Companies like Microsoft, Amazon, and Goldman Sachs also hire interns from the CSE branch.

If you want to know about PEC Chandigarh, then ask someone who belongs to that college like a college alumnus or a student studying there. They can provide you genuine information about the college. 

Among the colleges mentioned, the major competition lies between BIT Mesra and IIIT Lucknow. However, this can be compared and proved by the kind of students that take admission in those two colleges in comparison to LNMIIT.

Following are some of the pointers that will give an unbiased review of both the colleges :

IIIT Lucknow

1. You will come across an outstanding coding culture.
2. Its perfect location, located in its city is a major advantage.
3. Its average package is quite comparable to other IITs too in a very shorter duration of time.
4. It holds better fame than other IIITs.
5. You will experience a wide diversity in culture whether it's related to skills or belongings of students.
6. You will have more freedom.
7. You will come out as an important asset for the country for sure.

BIT Mesra

1. You will get access to better infrastructure.
2. You will experience better campus life.
3. You will get a stronger connection to the alumni network.
4. It holds a bigger campus area.
5. Its reputation is top out of other IIITs.

In conclusion, IIIT Lucknow’s progress is many times faster than BIT Mesra. Even the B.Tech course in Computer Science at Indian Institute of Information Technology, Lucknow has the lowest fees than the other two colleges.