Hello,

There is no difference in both the college standards. NIT is 2nd most selected for most engineering aspirants who have qualified JEE Main. If any one wants to join IIIT then that is a good choice too.

From all IIIT campus, Banglore campus is considered to be most demanding and good enough environment for a student to create a dream career.

So there is nothing to choose between two best things. Best things are best in every condition. If you join any NIT campus  you will get all the facilities and many scope to deal with real world problems it is same for IIIT also. T

The only thing that differs is cutoff-rank range. The barrier is bit lower for IIIT(not applicable everywhere). It depends on the IIIT board members.

Hope it helps!