Some points to know:
You cannot spam your way to victory. If you hate spammers then good for you.
Fireball wars don't exist.
Playing to win involves actually learning damaging combos, single hits don't win games (unless they are final hits or Astrals).
Characters are more balanced.
Just my opinion: hard to get started but once you do, it becomes the greatest fighting game with no equal (except Guilty Gear, maybe).
All the characters are unique, generally don't have many overlapping moves (Ex. Ryu and Ken, almost identical).