What is something that I'll benefit from most in IIT Kharagpur compared to other IITs?

One thing that you will benefit from the most by studying at IIT Kharagpur is that you will learn to survive despite all the challenges thrown at you. 

Firstly, its location disadvantage poses many problems like traveling long distances for food, shopping or AC hostel rooms. However, all this will seem meaningless once to develop deep bonds with your peers and end up making friends for life. You will start finding happiness in just Maggie and chai and won’t need lavish food dates to make you happy. Moreover, your personal and communication skills will develop considerably. Befriend your seniors and join societies that promote extracurriculars and you will experience a fun-filled campus life. 

All this will prepare you for real-life challenges and you will be ready to face the world without the armor of the Institute.

Another distinguishing feature of IIT Kharagpur is no restrictions on data usage, LAN bans, or hostel curfew, unlike other IITs.