According, to careers 360 both the colleges has AAAA+ ratings which means outstanding.

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

Both are top private colleges you need to clear the entrance exam for both the colleges. 

If we compare the exams of VITEEE and COMEDK then COMEDK is easy to crack as number of seats in COMEDK is more then VITEEE and number of candidate which appear for COMEDK is less.

If we compare the difficulty leve of the exam then COMEDK is easy in comparison of VITEEE.

Good Luck!!