Go for the middle; better chance at hitting "both" of them. Or go all Doc Holliday and pull out two swords...one for each of'm. 
In that case, draw both swords out and say: "I will have to kill both of you."
Watch the most recent episode of Arrow, the one from last week.
BTW when the swords get within a half foot of my head I see two of them. Fun fun. I fight Florentine via intuition a lot.
