Which is better NIT Patna or IIT Patna?

I don’t think it’s logical to compare IIT Patna with NIT Patna. Consider the following points 

• The comparison should be done of average packages and not the highest packages. That being said, IIT Patna's highest CTC is INR 29.30 LPA, and NIT Patna's average package is INR 14 LPA. 
• IIT Patna has 8 MOUs with foreign universities and 1 with the UNICEF office of Bihar thus providing better research options than NITP.
• Despite IIT Patna being younger than NIT Patna it has a better development rate than NIT Patna thus devaluing its old establishment. Being an institute of national importance, IIT Patna has better facilities such as 24/7 open Computer Centers, a wifi-enabled campus, better classrooms, better hostels, etc. 
• NIT Patna's development has come to a halt and its current scenario is just average. Whereas IIT Patna is still young and is developing further every year so you can expect it to become better every year. 

So between IIT Patna and NIT Patna, IIT Patna is the clear choice.