Lady Deathstrike runs the Gauntlet.

Lady D has no morals.    
She knows how dangerous her opponents are, as do her opponents know that of her.
She recovers immediately after each fight. 
She can win her fights by Death or K.O. 
Her opponents are in character.   
Her opponents have standard equipment, too.
No prep time. Random encounter fights.
The fights take place around Hell's Kitchen.  
 
 
  

Nice man. I can see her having some trouble with Blade...but if she gets past him, I see Spiderwoman putting her down. 
 
If not, I don't see her beating Cyber. 
 
Props for using Lady Deathstrike though.

I don't think she makes it past Elektra.

i'd say she stops at 5.

stops at Deadpool (grinds teeth)
 
if not that, then Deathsroke

KO or death. Okay Kills catwoman kills Black Widow,Kills Cheshire,Kills or Knocks out Elektra. But gets Killed by blade. Or if she Kills blade Deadpool kills her. Goes no further than round 6 in my Opinion.

Hmmm, good opinions all.

Stops at 6 or 7.

Stops at 4.