Deloitte USI vs CGI - Siemens client

Guys need insights! Deloitte USI vs CGI which is better? Cgi need the me to work in siemens office as a contractor (external) with payroll from CGI as permanent employee.

Overall work experience : 4 years 3 months CCTC : 13.5 LPA Deloitte : 21.5 lpa

CGI: yet to offer

CGI Deloitte