Dick in this clearly didn't have the "pure" example of Bruce saying "do this better than I did", or at least he didn't accept the lessons he was taught.
I don't need it explained to me why it's different. I just don't want it to be different in that way.
I know very little about Teen Titans but I get the impression it's nothing like what I just saw in that trailer.
It's somewhat like it. Naturally any adaptation is going to take its own approach. But it seems reasonably faithful to the basics of the characters. It's just a question of the tone they're taking.
The Teen Titans are often compared to the X-Men. They both started out as relatively ordinary titles in the '60s, then had innovative reboots that came along around the same time in the '70s, had a similar approach to their characters and storytelling, had a similar seismic impact on the industry and fandom, and made superstars of their creators. Much like the X-Men, the New Teen Titans comics told sophisticated, soapy character-driven stories with a good supply of drama, humor, and everything in between. Some of their storylines were very dark and tragic, particularly the plotline involving Terra and Deathstroke. But some of their most memorable dramatic moments were in more upbeat stories, like the formula-breaking issue where Dick Grayson applied all his detective skills to help Wonder Girl discover her real name and reunite with her birth family.
One of the things I liked best about the 2003 Glen Murakami-produced Teen Titans animated series is that, although it could be extremely goofy and silly and often seemed to be nothing more than that, it also was willing to go to some really intense, dark, and emotionally powerful places, within the limits of what a show aimed at preteens was allowed to do on commercial TV. But it was the willingness to mix both tones, to go all-out and push the envelope with both frivolity and darkness, that made it so memorable and effective.