For starter the game cobo are more improve or should i say deadly, the striker combo move are more faster and able to help you more compare to the privious series, if you dont like to use striker than you missing the best part, if you use Ralf and Joe as a striker you can make an endless combo, This new feature of character attack able to attack opponent even when the player in the attack mode, meaning you dont have to stop in order to call the striker, even when player attacking the opponent player are abble to call the striker with only a touch of a button.
But the are a slight disadvantages using striker against the boss so watch out. the best way to avoid the boss power max when using striker is, when you attack him and use the striker at the same time or after a good combo, this way the boss will not have the upper hand to launch his power max.
good luck