Thapar University will get better not just at the national level but also internationally. Most students look at cut-off but you will realize that your JEE score will not fetch you a job in IT and Mechanical companies.
Education-wise, the theoretical and practical system of Thapar University is also much advanced compared to NITs. Around 300 different students have cleared their CAT every year for the last 3 years. Many top UPSC qualifiers are from Thapar University.
Moreover, the college has also started advertising for admissions and the infrastructure is also getting better every year. The fees might hike up in a few years if you plan to study at Thapar but you will also be able to get into core branches as the number of seats will increase.
After four years, the college will probably become comparable to other colleges like SRM, VIT, and LPU.