This is your emotion talking. Read the statute. Whether you are at the scene of an attack "legally" is only relevant in determining whether you have a duty to retreat. Having a duty to retreat does not mean you absolutely did in fact have an ability or means to retreat without putting your life further at risk.
Whether it is feasible or even rational to retreat is an argument you have on a different day. No one can prove or say to you with specificity using some one-size-fits-all approach how you were supposed to retreat or flee from a charging attacker. You cannot assume everyone claiming self defense is some sort of Carl Lewis and could have escaped.
If you don't know exactly what your attacker is armed with, you can't outrun a bullet and I don't necessarily have the time or care to try to figure out what exactly a charging attacker is armed with in the midst of an attack. The attacker here had or has no right superseding the defendant's as to being at the scene of the attack at the time of the attack.
Any jury can determine from any set of facts who the initial aggressor is and if a reasonable person could perceive or deduce that something harmful or deadly is or was imminent from the aggressor's conduct.
Dude, this is not out of emotion; this was my attempt to explain to a semiliterate person how sentential logic works. And one has to have a working knowledge of
sentential logic to understand what laws mean. It's pretty clear you are clueless.
If this not a hypothetical, then let the lawyer handle it.
If this is a hypothetical, then take a course in logic and then come back.