Uh, look at how Ayane and Hayate teamed up against a friggin swat team. They even got distracted at one point and still managed to make it out alive. Ryu in Ninja Gaiden DS can actually perform normal moves that look like the storm of the heavenly dragon and shoot what looks like sonic booms from his sword. Hayate kills people quickly, and so does Hayabusa. Kasumi can keep up with Alpha. You have those three protecting Ayane for a couple of seconds while she charges up the spell it isn't that hard for them to pull if off. Attacking wildly in the first place would be a bad move for the T's as they'd get killed even easier.
Edit: Ryu should use the Dabilahro, lol. Seriously....lmfao...bye-bye Tarkatans. 😆