Hello aspirant, both of the colleges cannot be compared

Because, each if the college is best in it's own way p. Especially when the branch of computer science is taken.

Both of them are equally best in terms of education, placements course curriculum etc so on and so forth.

But the change is in life style. If you wish to experience a luxurious engineering life style, then go for bits pilani.

Else, a normal life style like other colleges, nit trichy will go the best

But in terms of educational aspects, they cannot be compared at all. It would be your choice