I don't think so. It says "Lethality of the Cartridge". For the same number of shots, the 0.45 was more lethal (more kills vs injuries per shot).
I hope that being wrong does not make you feel injured.
FYI, the Revel Stoke Pecan tastes terrible, and the bad flavor remains in your mouth for hours. It seems to be a traditional rite of passage (from the JK Experience).
No, but in this case, defending myself is just the trivial effort of stepping two feet to the right, which I can accomplish in a single step. Or simply not intentionally stepping in front of the vehicle in the first place.