[quote name='OGHowie']Damn 2 people that don't love it?
I also prefer KOF and SF, but ordered it off Amazon because of all the rave reviews.[/QUOTE]
The game's not slow at all. It's only slow if you're clumsy with the controls... which everyone is at first... but once you start getting the hang of a character of your choosing, it really starts to come together. And you really ought to take the game a character at a time. They all play so vastly differently that they even have character specific gauges. Each character has completely different gameplay mechanics.
I really love the game, and based on what I've read, I'm pretty convinced right now that it's a better, more complete game than KOFXII will be (though I'll likely be getting both). While I still prefer Street Fighter, BlazBlue has made a very excellent first impression on me. The care taken by the creators is evident in every little nuance of the game. The surprisingly in depth story mode, the adorable Teach Me, Ms. Litchi sketch's, the gallery, the replay system, the godly netcode... hell, the characters even say different things in battle depending on who their opponent is. There's an attention to detail that's really not seen in a lot of other fighters.
If you're willing to learn new fighters, then you'll like it. If you're expecting a Street Fighter clone, you won't. Don't base your decision on two opinions on the internet. Even the greatest game has people who hate it, and even the worst game has people who love it. Read a bit more about it and maybe watch some online vids before making your decision on whether to return it or not.