I look at it as three possible outcomes.
You get cut/stabbed and he doesn’t.
He gets cut/stabbed and you don’t.
You both get cut/stabbed.
So….you’re odds ain’t that great from the git go. But this really depends on how much the element of surprise is involved. For me, I’m not trying to stab you at all, I’m slashing your knife arm/hands. Been practicing that for eighteen years now. I do more knife training now than fight training.
When I first became a cop we had a video that was shown to new recruits as part of academy training. It was called "Edged Weapons.” Ninety percent of it was film of blade encounters, including one of a man, obviously in a mental health crises, slowly carving himself up. It was really nasty.
They stopped showing that film some time ago, too many recruits were getting sick or upset by it. Heaven forbid, we can't have that.