The cutoff shown in career360 is whether the cutoff for written test or the last scores that are admitted in particular IIT?

You will get separate articles for both , the cut off for each subject and cutoffs of different courses in different IITs or NITs. General cutoffs are given so that you can get an idea about the marks you need to score to get a particular subject but if you just want to see cutoffs for a particular college then there are separate articles for them.
Hope it helps.
Thank you.