I am taking non-proficiency into account, yes. The pool goes like this:
3 from Strength + 2 from all-out attack + 1 from Insanity - 1 from-non-proficiency = 5. If he had one dot in Weaponry, I'd add +1 and remove the -1 from non-proficiency.
So yes, if the victim dodges then the odds of the attacker hitting aren't good. But then, he is a complete amateur when it comes to melee weapons.