[Discussion] Who is Nightwing's true archenemy: Deathstroke or Blockbuster?

Art by Tony S. Daniel and Bruno Redondo

Personally I always thought Deathstroke as being more associated with the Titans and often used as a general DC villain rather than Nightwing specifically.

Honestly it's kinda shocking Deathstroke hasn't been in any solo Nightwing run in ages (Devin Grayson?).