Regardless if you have a weapon or not, if you're going to resist someone that is armed, you had better have better response time than your imagination. Something I learned many, many years ago. It takes 4 seconds to disarm a man. It only takes 1 second to kill him. That's with your bare hands. But, it takes at least 2 seconds for you to realize what the situation is. In that time, he can put 3 shots into you.
Generally, anyone that has a weapon to use against an armed intruder will hesitate before acting to make sure they aren't making a mistake. They "second-guess" themselves. That hesitation is usually their undoing.
Somewhere, I read that any kind of club, tire thumper, or anything like that is considered a lethal weapon if it has a leather or nylon strap that you can put your wrist through. If it has not strap, it is not considered a weapon. Don't know if I really want to test that. But, if someone comes into my truck, my 3 pound hammer over the head is likely to knock him into the middle of next year.