I'd say your about spot on. I would put WW higher, but your top three are pretty much perfect. Karate kid is the best fighter in comic book history, imo.
I might put Wonder Woman between Deathstroke and Batman, or possibly even above Bruce, but everything else is spot on. Maybe I'd switch Canary and Hawke.
Yeah I probably could've put Wonder Woman higher on the list, but I wasn't too sure. She mostly fights with her other abilities and powers so it's hard to determine how skilled she really is. About Canary and Hawke... I'm not too sure. I think they are roughly equal. Also I probably could've included Ra's Al Ghul, what do you think?
2.Richard Dragon
3.Cassandra Cain
4.Wonder Woman
5.Lady Shiva
6.Bronze Tiger
7.Batman
8.Constantine Drakon
9.Deathstroke
10.Connor Hawke
Honorable mentions. Nightwing,Red Hood,Black Canary,Ras Al Ghul
2. Richard Dragon.
3. Lady Shiva.
4. Batman.
5. Deathstroke.
6. Cassandra Cain.
7. Bronze Tiger
8. Ra's Al Gul.
9. Constantine Drakon.
10. Black Canary.
Honorable Mentions: Wonder Woman, Conor Hawk, Nightwing.
2. Richard Dragon
3. Lady Shiva
4. Batman
5. Deathstroke
6. Wonder Woman
7. Cassandra Cain
8. Bronze Tiger
9. Connor Hawke
10. Black Canary
1. Karate Kid
2. Cassandra Cain
3. Lady Shiva
4. Richard Dragon
5. Bronze Tiger
6. Batman
7. Deathstroke
8. Wonder Woman
9. Black Canary
10. Connor Hawke
Definitely not the most accurate list, but this is just my opinion.