If you can, try the same routine but, #level  them up to 40-50-60 something. Max their taunt skill with #setskill 73 200/300. Fists are cool and have one of them hit for a little damage, turn your back. Then try to taunt with the other. #repop and do this a few times so you know for "certain". 
 
You'll probably get the same result and you'll know is fubar with a max skill war on a green mob with damage. It's not completely live like, aggro/taunt/proximity, that I can tell. It's not bad for me but, I notice a difference. 
 
EDIT: I dunno, it seems you've done enough testing 
		
	
		
		
		
		
		
		
		
		
		
	
		
		
	
	
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