Ginji is a good example of what happens when you pit a bullet timer against Revy
Added a few battle conditions to the match opener since I highly doubt the person who made this thread's popping up.
As for the match...
To be fair, I don't think this is a good match for Spike. A number of Black Lagoon characters have some degree of superhuman attributes demonstrated such as Ginji's bullet-cutting feat and Roberta's ridiculous capabilities.
@Dream: I agree with everything except round one. Spike is a better fighter, and I think he would put her down if he breaks her arms. But the way I'm think of things is if he goes really violent on her. She does indeed have some super human speed, reflexes, and durability. Which would make it really hard to take her down. It really depends if this round is in character.