I think both drama have the same dark feel.
The lead males are both mysterious and the lead females are not sure if they can be trusted.
Both male leads are good strategists and creates several plots and plans to keep the main females safe.
The female leads seem as if they are against the world.
Both female lead have a great martial artist as their bodyguard/male servant.

Ended with a 'WHAT JUST HAPPENED?' feeling!

Similarities:
Both deal corruption among persons in the justice system.
Both have persons in the justice system working to bring down some one higher up the the system.

Difference:
There was no crazy fighting in Punch like in Bad Guys 2 and confrontations were more law based.

Similarities:
1. Selfish mothers.
2. Selfish daughters that covets what others have.
3. Gullible rich parents.
4. Both were heiresses to fashion industry.