Here are the difference between the ROTJ Hero and the ROTJ SE (this was already posted in other threads):
1 - The helmet is the ESB Hero and not the ROTJ Hero.
2 - The whole armor is painted in the ROTJ scheme, but the only ROTJ Hero parts on this suit are the left gauntlet (not present in all the ROTJ SE stills), the back plate and the back belt, while the right gauntlet (not present in all the ROTJ SE stills - the gauntlet is slightly modified, more exactly they replaced the whipcord housing, the hose connector is different and they also added some paint touch-ups) and the left knee were part of the Pre-Pro #2 suit.
3 - The jetpack is ROTJ Hero (only in the ROTJ SE stills), although in the ROTJ SE (the movie) they used one of the damaged jetpacks.
4 - The wookie braids looks like Pre-Pro #3/ESB Hero, but the cape might be from one of the ESB Promo suits or possibly the Pre-Pro #2 (no evidence on this).
5 - There are 14 ammo pouches (versus 8 on ROTJ), which were part of one of the mismatched ESB Promo suits.
6 - The soft parts might be from any suit (except the Pre-Pro #2 vest which is present in the archives with most of the original armor parts).
ROTJ SE stills:
ROTJ SE onstage: