I'm usually the last person to get bothered by change... I love all the new Marvel characters, I'm not hung up on past continuity.. But I don't see how anyone can feel the Titans, Teen and adjective-less, are in a better place now than they were pre New 52. I read all their appearances and I'm still confused where they are and how they ended up there.
The familial upbringing is definitely the biggest difference to me. Connor also had Superman as a mentor/ impossible figure to live up to, whereas Kong doesn't have anyone quite like that. He does have mentors, but they're not like having Superman casting his shadow over you. Kong also has feelings of guilt about his mother dying, whereas Connor was strictly the victim in his cloning and origin.