To me accuracy is all that matters instead of getting into the name game and debates on cutting area and all of that. Both are good reliable sturdy built heads. Whichever will hit the X at the furthest distance is the one I'd go with. Either one in a lung or heart is going to kill him. There's no degrees of being dead. The accuracy is why I use a 2 blade expandable. This was at 54 yards.
Good luck on it.