It's difficult to compare state level colleges with IIT and BITS, Pilani but you can check the top colleges of Maharashtara & West Bengal below:

MHT CET

1-Institute of Chemical Technology, Mumbai
2-College of Engineering, Pune
3-Veermata Jijabai Technological Institute, Mumbai
4-Walchand College of Engineering, Sangli
5-Vishwakarma Institute of Technology, Pune

WBJEE

1-Jadavpur University, Kolkata
2-Indian Institute of Engineering Science and Technology, Shibpur
3-Maulana Abul Kalam Azad University of Technology, Kolkata
4-Kalyani Government Engineering College, Nadia
5- Institute of Engineering and Management, Kolkata

To check the ratings and ratings of the colleges with best branch you can refer below link-

http://www.engineering.careers360.com/colleges/ranking/2016/top-engineering-colleges-in-India-accepting-wbjee-score