Why are IIT Guwahati people competing with IIT Roorkee and IIT BHU people?

Based on different factors, you can categorize the IITs into various groups. For example, academically, the top IITs are IIT Kanpur, IIT KGP, and IIT Bombay. Similarly, IIT Guwahati is known for its top-notch accommodation facilities with single rooms allotted to every student. The campus encompassed by natural beauty is second only to IIT Roorkee. 

Universities like IIT BHU and IT BHU despite being old, haven’t been able to reach the level of IIT Kanpur or Kharagpur. However, it does give a slight edge to IIT Delhi in terms of academics 

Honestly, every student is aware of the actual credibility of his institute and chooses it anyway. 

Either the Institute aligns with his preferences or that particular IIT was the only IIT he could make it into. So IITians don’t usually fight amongst themselves unless it’s an outsider trying to trigger them.