Hello aspirant

hope you are doing great. As per your query  I would glad to tell you that it is very difficult to compare the comparison of jee mains and cats which is required to get admission into IIT and IIMs. Both they have their separate admission crteria and different students from different streams . Jee mains is generally given by science students while cat is given by students of every stream and have people of more than 25 years of age . IIMS conducts Group discussion ,personal interview of the candidates who they call on the basis of cat score and IIts gives admission through jee mains and jee advanced. So you can say IIMS admission process is quite long and require hardwork on many things

Hope you found this answer helpful. Good luck for your future