Adrenastaffs and Vampire decks run the risk of killing the opponent before you get to full HP, yourself. However, Adrenastaffs do less damage for more healing, so you'll get tons of EM's, but you will lose more and will be much slower.
If running SoD's, you would still need as many Heals. Staffs and Long Swords do consistent damage, so it'd be slowed down for more losses and less EM's.