Hello aspirant

The syllabus for both Jee and meet is based on class xi and xii syllabus . The way of setting question paper is different. The questions asked in neet for physics are simpler as compared to jee.

Talking about Chemistry in JEE , level of difficulty is more than jee. You will have to practice more in order to get good score in neet.

Talking about physics in neet usually questions asked are formula based and you must not require to put multiple concepts. But in JEE questions asked are based on multiple concepts in one question.

More over , NEET is a single level and jee has two levels Jee main and jee advanced  Jee advanced is much more difficult to crack than jee main

Neet students depend on biology or they work more on biology rather than Physics and chemistry.