Ash is good, but this is ridiculous. He gets his ass kicked in every way. Gunfight, fist fight, sword fight.
Ash might even lose if Deadpool is unarmed and Ash has his broomstick and chainsaw arm.
If this were his video game self it might be more fair but since Deadpool can't... er... die? Eventually Ash is going to lose.
Toon Force can be used if it's consistent, but it's not really a "damage negater" like it is for a lot of other characters.
Ash can and technically HAS died from things humans can die to. He's just very hard to put down for a human.