GIBS is pretty flexible with entrance exams. They accept CAT, MAT, CMAT, KMAT, XAT, and even ATMA. A few of my batchmates came through state-level exams also, and some had both CAT and MAT scores. It honestly makes the process easier because you don't get stuck with only one exam option.
I personally felt it's helpful for students like us who are juggling between different exams, because GIBS doesn't make it overly complicated. Even if the score isn't extremely high, they still look at your profile, interview performance, and motivation to study PGDM or MBA. So the entrance exams matter, but they don't keep it overly stressful or gate-k
