hmm, the more I think about it, the more I think that the brolly naruto combo COULD win, there are just too many unique abilities that would help here. Sage mode, kyuubi, shadow clone, rasenshuriken.
If broly went sage mode, his durability, speed, and power would all increase dramatically. Sage mode also heals him.
Kyuubi also heals him, and adds power (not an insane amount, but definitely some to be noticed at least a little).
And I don't care if goku is far more durable, if he gets hit by a Broly powered rasenshuriken, he is dead.