Hello Dear,

You can not compare both UPSC and SSC. UPSC provides class A services and SSC provides Class B government Job. You can become a gazetted officer after clearing UPSC but after SSC you need to wait for 14 years and promotion.

Both the exams has very tough competition. The seats in UPSC is very less so competition is very tough. In SSC the seats are more but the candidate appear of the exams are very huge in number. Corruption and malpractices are another issues for SSC Examination. For more details you can follow the link:

https://competition.careers360.com/articles/ssc-cgl

https://competition.careers360.com/exams/upsc-civil-services-exam

Good Luck