You see the controversy between government and IITs. They do not want to give weightage to marks obtained by students in their Board exams. Why? Because they know it is not a measure of competence. For every admission to higher course we have one entrance exam. Why? Because certificates given by universities are not a measure of competence. We have written tests conducted by UPSC, SSC, State PSCs, BSRB, SBI, RRB etc. Why? Because certificates given by universities is not a measure of applicant's competence.
You show me one employer, one institution which gives a job/admission to higher study on the basis of certificates issued by universities. The universities themselves have no confidence in the marks given by them during degree courses and hence they again conduct entrance exam for PG courses like MBA, MCA, LLM, MTech etc.
That being the case what is the sanctity of these certificates and how does it matter whether it is fake or genuine.