I'm not 100% on what the qualifying factor is when getting credit for the kill on nodes/monsters/adds, but I get the feeling it's attributed to % damage dealt. If one company does 51% they win the kill even if they don't achieve the last-hit.

You say you think 8v8 you should fight them, but the time taken to down an 8-man effectively is horrendously long.
We've had countless situations where we back and forth'd at each other until another 8-man party from opposing GC came to back them up.

The majority of kills in Slaughter are down to overextending melle, or limit breaks.
Your best chance for killing is when you are 24 and co-ordinated.

Priority:
- Arrive first
- Deal at least 50% damage to the node
- Attempt to win some kills for battle high
- Retreat as soon as possible before team B is overwhelmed middle.