It is pretty much a total copy. I did not play the new one, but flipping through showed the same side quests and such. There is a new big quest with Dragonspear Castle, but made me think it was just a copy/refresh.
Yes, it was very easy and fun. No problems with B3 (I guess the ghosts died a little easy). The campaign ran for 28 sessions, I followed B3 with Halls of Tizun Thane & The Licheway from old White Dwarf. Towards the end there was one issue with Mini Six skeletons not being able to hurt very tough & experienced PCs, but overall it was great seeing D&D adventures from a different perspective. We only lost one PC the whole campaign; the D6 Star Wars style system makes death fairly unlikely. In Halls of Tizun Thane one PC Saya chased a Night Thing/Shadow Dancer (unstoppable demonic killing machine) off into the woods, used up all her Hero Points trying to hurt it, and got stabbed in the chest; with no HP left to soak the damage she was dead when the others found her.