What's this about?

Everybody be talking about Batman vsDeathstrook

Deathstroke is a great villain, if that is what you meant. He has beaten Batman, if I recall correctly, 2/3 times.

There’s the Deathstroke vs Batman arc in issues #30-35 of the current Deathstroke series if you’d like to know more about a relatively recent duke-a-roo they’ve had.