How will my zerk barb fare?

Okay.

Lets convert actual gaming few inches into a milimeter.

With a zerker, you can WW and hit them being 10 milimeters away. With a CB you can do like being 15 milimeters away. The advantage? You can hit a Zerker WWer 5 milimeters before the zerker wwer can hit you.

Atleast thats what i assume. Its not 100% accurate, probabaly not even 10% accurate, but who knows.