Certainly believable arguements on both sides of the ball.
I personally like the "Castling" tactic the other guy mentioned. Switching opponents.
My opinion is that Nightwing and Daredevil are pretty close to equals, Daredevil gets an edge because of supersenses, Dick gets it from a decade or so of training with the prince of darkness himself. They'd be much better paired up, especially given their acrobatics [not that the other two characters can't be bouncy when they want to, but these two are more accustomed to it.]
And Bruce smashes Electra as soon as he feels like doing it. Then helps out Dick, who's certainly experienced enough to take Matt on, given he's been a hero since childhood, and he's in his prime years of fitness right now.