Why am I getting downed in a matter of 2 seconds, yet....

Some blame server performance when they possibly need to look at it as that user was just better and it showed as im the one who died. Certain guns can just melt people in a matter of a second. Even full body shots. Some people are just better they are quicker they have better movement. So many things can be discredited by these features. Shoot i watched Sweet other day drop someone in a pred lobby with only 2 shots of his flatline with anvil. As i said so many factors come to play with these type of things even things the user may of missed on his side of things.