I haven't played a Dragon Ball Z game in years. DBZ 2 on the Super Famicom was one of my favorite games though. Wondering if I still remember the super finishers. I learned them all by trial and error. Really fun game. That aside I don't like doing pre-orders and have actively avoided doing that in the last two years now but I may break my vow just for this game.
There are a TON of AMAZING DBZ games including all of the Budokai games and DEFINITELY Burst Limit (PS3). That said I don't preorder anything except Nintendo games. (and no man's sky if given the chance haha) Nintendo is not great at a good handful of things but usually when they say "you're going to get game A with features B, C and D." You usually get game A with features B, C and D. :D I don't think it's a huge risk.
I think my last DBZ game was Hyper Dimension for Super Famicom and Dragon Ball Z Legends on PS1. After that I kind of retired DBZ around when GT came out. I was one of the "if its not Toriyama I'm not interested" people.
You missed out on some good titles! Older DBZ games are pretty cheap these days, especially PS3 releases. If you ever get bored I would encourage you to check them out!
I'll definitely give them a look. Thanks.