No there is lot of difference between AIEEE and JEE. In AIEEE the questions are some what easy and straight forward, whereas in JEE the questions are not straight forward.
AIEEE is now recognized as JEE Main with effective from 2013.It is conducted by Central Board of Secondary Education (CBSE) and admissions to all the NITs is done on the basis of merit list of JEE Main exam.