Stabbing a wild norp in the heart/lung will stop them faster than breaking their arm, that much is guaranteed. >That's another non-issue with light, short weapons. Generally weapons in the 20"-36" range and 1 to 2 1/2 lbs in the hands of a man of average strength can be swung faster than normal human reflexes can respond to.
Yes, strikes can be done so quickly enough and with little enough telegraphing that it would be unavoidable if you didn't expect it, but most people will predict attacks based on other smaller telegraphs that happen before the swing itself. I'm sure you've been watching Skallagrim/Lindybeige et al since you know about strike telegraphing, and I'm sure you've heard them explain that it's not possible to have no telegraphing but it is possible to minimize it.
In any case, I just said that a stab with a sword would be better than swinging a mace for a close quarters home invasion situation in which there likely wouldn't be enough room to safely use typical slicing strikes.>You're seriously better off with bear mace than any object where the plan is to stab a would-be attacker.
Probably, I don't know enough about how quickly it can disable an enraged norp.