What kind of question is this? Are you dumb. NIT Calicut is a prime institute and VIT is a fraud. If you can score 98.3+ percentile in jee mains why will you even think to join this shit

According, to careers 360 both the colleges have AAAA+ rating which means outstanding.

Ratings are based on Placements, Faculty, Cut-offs of national / state level Entrance exams, Accreditation and Reward status and Publication record from Elsevier’s indexing database - Scopus

In NIRF, Ranking VIT Vellore is in 16th position and NIT Calicut is in 44th position.

Both the colleges are good you can choose any one according to your preference based on location or you want to go for government college or private. 

Good Luck!!