Peter's death occurs when Norman Osborn returns from his seeming death in an earlier story, where Norman and his son Harry were both seemingly slain at the end. The title of that earlier story should have suggested that one of them was coming back: "The Death of a Goblin."
The spider that bites Miles snuck into his uncle Aaron's bag while he was burglarizing the abandoned Oscorp facility. So as with Peter, Miles' fate as Spider-Man is directly influenced by a crime involving his uncle even if he doesn't know it yet.
It goes further when his uncle Aaron (the Prowler) blackmails Spider-Man into working with him, mostly by appealing to the responsibility Miles has to his uncle, since it was because of him that Miles got his powers.
Here's another. Issue two ends With Miles upside down on the celing and in a reversal of what Peter reaction was. While Peter's reaction was excited ("This is so cool."), Miles's reaction was more worried ("Oh no.")
Shouldn't someone of Black Cat's profession where something like, oh, I don't know, a Bullet Proof Vest? Because that big hole in the front of her costume just screams professional thief, and a not something like, say, hooker?
Black Cat doesn't seem like she's too concerned with what people think of her, much less whether or not she looks like a hooker, and the obvious vulnerability in her costume could simply be her way of letting people know that she's too Bad Ass to need a bullet-proof vest. The real question is, how do her breasts not spill out when she's fighting? Her suit would pretty much have to be fused to her chest for it to stay on. And in Ultimate Comics: Spider-man, she has even less support.
A well known panel of the mainline Spidey comics reveals her ample assets act as "ballast", take that as you will. Presumably, her costume is designed to take advantage of that.
Her bad luck powers actively prevent her from sustaining serious injury and she has shown to use it from stopping herself from getting shot so who is say that she doesn't use it to make sure she doesn't use them for preventing nip-slips.