"Same difference"

Is it really your contention that:
"your life needs to be physically threatened"
is the same as the statutory:
"the occupant reasonably believes that such other person might use any physical force, no matter how slight, against any occupant"
?

If someone is in my house illegally, a reasonable belief that he might punch me in the arm meets the criteria in the statute. I'm justified in using deadly force against him (and I'm immune from criminal prosecution and civil liability), even though there is no credible threat to my life.