Hello Ankit, 

Both of the mentioned colleges are above average and not so good.

But if we compare these two colleges, then FGIET is a much better institute than IERT because its rated at 2.9 and IERT is rated at 1.5 out of 5.

Other things like placements, faculties, college life all these are much better at FGIET. 

Hope this helps, Thank You 

All the best