hi,

see for any of the exam cutoff score depends on some of the following factors:

number of applicant for any particular post,

questions paper level of difficulty,

seat matrix for any particular course.

now see the candidates will  shortlisted based on score obtained in the entrance test, some times academic profile also consider along with  entrance test score.

since you have low confidence for admission to christ university, you need to apply for others colleges as well, but keep an eye on official declaration untill you are confirmed that there is no chances any more.

hope you understand.