Sorry to complain, but are these really any different? I know the Inquisitor's TIE has slightly more rounded wings, but I figured that was just the animation style of Rebels and teh fact that it was an earlier model.... but come on - it didn't need to be a whole new ship. I really hope they treat it like an advanced and allow it to equip the advanced title. Otherwise it just seems silly to have made an all new mold for a ship that is... well, it's the same ship - it just happened to be in a cartoon instead of Episode 4.
The key difference is that one is from a cartoon, and the other one is real.
Actually, neither is real, one comes from a animation tv series. the other come from the Live action movie.