Will IIIT Lucknow surpass IIIT Allahabad in 10-15 years?

There are no specific criteria as such to decide whether a college has surpassed another or not. The rankings offered by different councils, don’t matter much and are somewhat considered irrelevant too. In general, people have an overall perception in mind, in which IITs are the best, followed by NITs and some well-known IIITs, and some IISc and BITS. 

Comparison: (Winning Institution - IIIT Allahabad)

• Talking about IIIT Allahabad, it is quite well established and offers decent facilities and infrastructure. 
• IIIT Lucknow is far from the standards of IIIT Lucknow, and it is difficult for the institute to reach the same level as IIIT Allahabad, even after 10-15 years.
• There is a level of saturation in the minds of students and educational advisors, where there are some limits of comparison. For example, IIT Bombay, IIT Madras, and IIT Delhi can’t be compared to NIT Trichy or NIT Warangal. 
• Although NIRF rankings provide a way to categorize institutes according to their quality, there is a standard slab that decides colleges of the same level. 

For the comparison of IIIT Allahabad and IIIT Lucknow, the former has made huge progress with time, and it is almost impossible for IIIT Lucknow to reach that level in the next 10-15 years. There is not much difference in location for the institutes too, so exposure will not be an advantage. In the best-case scenario, the gap in development between IIIT Allahabad and IIIT Lucknow may get reduced.