The enemy dies, shouldn't matter who on your team killed him.
It isn't even half, if you add up a down and an execution, a down is still worth more I believe, regular execution at least, can't be certain for a special one not like I do them anymore since they leave you way to open.
Check me out in action!
If it's JUST a game then why the hell are you on a forum? For video games? Obviously you care.