Look both universities have one edge over another , jaypee is older and more established and companies like Amazon also visits there . Package ranging in jaypee is from 3.3 to 26 lac/annum .average package is between 3.50–4.50 lac/annum . But jaypee doesn’t have strong international tieups .
Bennet is newer but have lots of international tieups and also , student review of Bennet is also as good as jaypee . You have to wait for first batch to passout to know the placement scenario of Bennet.
My verdict , if you want to study higher degrees after b.tech in foreign or want to settle in foreign Bennet will give you better chances.
If you want to join job after b.tech , placement of jaypee seems better as it is known. May be Bennet can also have good placements but to know about that we need to wait for first batch to passout. So , if you want job after btech in India go for jaypee.