Actually they can, it's pretty simple
Lets assume person X got 200 Marks
Along with person X let's say theres Y and Z who also got 200 marks.
Create a new hidden parameter called revised Marks
Revise their marks according to 7.00 marking scheme.
Then place their Ranks as X > Y > Z.
But their real marks are still 200 but we can arrange amongst them..
What is absolute bull crap though is discrediting someone of their seat in JEE Advanced entirely (approx 70 marks) because they wrote 7 instead of 7.0 or 7.00
If people care so much about "the spirit of JEE Advanced" and how JEE Advanced should pick the candidates that are "worthy" .. Then why don't the philosophers trust the people who actually made this exam? The senior faculty of IIT Kanpur who know EXACTLY the kind of students they want in IIT, with their few decades of experience
It's better us 17-19 year olds don't comment on how "JEE Advanced should only take the worthy candidates who wrote 7.00"
JEE Advanced was made by the IITs who very well know how to find the worthiest candidates.. They released the clarification because they didn't consider it as a point of worth of a candidate. I respect their view, since they are brilliant minds who made this exam and it'd be arrogant of me to think I know better than them about who is worthy and who is not.