Alright in this battle Battle Batman has Triathlon and Multiple Man abilities aka three times the physical attributes of peak human being
Triathlon ability
Superhuman Strength: Triathlon is superhumanly strong and is capable of lifting approximately 2,400 lbs.
Superhuman Speed: Triathlon is capable of running and moving at speeds greater than the finest human athlete and can reach a top speed of 105 miles per hour.
Superhuman Stamina: Triathlon's musculature generates far less fatigue toxins during physical activity than the musculature of an ordinary human. He can exert himself at peak capacity for 3 hours before fatigue impairs him.
Superhuman Agility: Triathlon's agility and bodily coordination are enhanced to levels beyond the human body's natural limits. His agility is approximately 3 times that of the finest human athlete.
Superhuman Reflexes: Triathlon's reaction time is enhanced to a level beyond the human body's natural limits. His reflexes are approximately 3 times that of the finest human athlete.
Superhuman Durability: The tissues of Triathlon's body are somewhat harder and more durable than those of ordinary humans. While he isn't invulnerable, he can withstand physical trauma that would severely injure or kill an ordinary human with moderate discomfort.
Regenerative Healing Factor: If injured, Triathlon is capable of healing with greater speed and efficiency than an ordinary human. He is able to heal mild to moderate injuries 3 times faster than an ordinary human being
If the fight happens in a DC comic...Bats wins due to some writer's silliness. If fight happens in Marvel or on neutral ground then Ares every time. This is a curbstomp.
so ares has a strength level at or around class 100, superhuman speed, a healing factor, and never tires out.
This version of batman is 3x peak human but multiplies...not really enough to overcome ares IMO, since multiple man has a limit to how many dupes he can produce.
Ares simply keeps tearing them all in half until the limit hits.