Getting high packages salary isn't dependent on the counselling. The companies those recruit with high packages go through a number of back ground check of the colleges and then they set a range of value to be reffered.

Most of the basic criterions that are followed by corporates during campus recruitment are:

1) Infrastructure: Labs and the environment in which a student is being cultured is a salient feature to be followed by corporates.

2) Research: Research helps in building the knowledge that have been innovated in the college. So a student with higher innovation will also be a potential employee.

3) Alumni: Alumni plays a vital role. the more potent alumni a college have , the better it represent to the world. So networks of alumni also influence the recruitment and thee range in which the packages are decided.

So if a college lack in any of the three or all of the three points , then there are possibilities of low packages. Exceptions can be there, but its the generalized  case which applies to the majority.

Hope my answer helps you. Have a great day!