Well, You cannot compare UPES with Amity.
UPES is a mainstream and reputed college.Placements are many times better than Amity.They take in students Through examination and Jee score.Hence crowd is much better and attracts better Companies.
Well Amity, is like the last resort.Students having no Options opt for Amity.A friend of mine who couldn’t clear any examination has opted for btech at Amity.All admissions there are through management.
All these points were according to records and facts.A student who develops real talent and skills in CS , disregarding whichever college he or she is from, will find himself successful in future.Top companies like Google and Amazon are now recruit freshers through off campus drives.