No assist xp?

[Looter]

Look at Q, I think he received all the XP on the server for that special strangle hold.

In The heat of combat, man will resort to any means to survive. That strangle then presumed necksnap..
looks like the javelineer tried to shieldbash Q though in an attempt to escape.

Anyway, i think it had to do with the server itself as well, probably not client side with him not registering as pointed out he appears to have already done so.