What usually happens is:
Example 1
1) I have a firefight with an another player. Both players are very close to each other.
2) I power jump when I'm right next to the enemy.
3) I'm dead even though the player was still looking forward instead of behind him/her.
4a) Killcam shows I did power jump, but the player still hit me even though he was shooting at nothing.
4b) The killcam sometimes shows how the player's crosshair instantly moves to my character's upper body when I power jump. Small flaw with the aim assist?
Example 2
1) I have a firefight with another player. Both players are very close to each other.
2) I decide to run away by running past the enemy.
3) I die after I have run past the enemy.
4) Killcam shows the player didn't point towards me but still manages to hit me.
So basically, player can hit an enemy without pointing at him/her if the enemy was very close to the player very recently. I have never notice this kind of stuff outside of very close range.
This seems to be more of an issue with the hit detection than with the connection, since the delay with the character is far, far worse than how it usually works. Has anyone else noticed this?