According to Steve Wells, statistics display if we remand the killings to just biblical numbers alone, the "god" of the Bible has killed 2,821,364 people. Of course, this does not account for the body count of the flood which increases the death toll to approximately 25 million (all living things minus life in the ark). Satan; however is accredited with only 10 killings and this was with God's help—wagering a bet on Job's life (Job 1: 1-19). But, to be fair, we will give Satan 10 bodies to his credit.

Although, common sense isn't common at all, who would you choose to exhalt (if you had to): a genocidal maniac or someone who made a bet and just so happened to have killed 10 people.
It appears, Christians are worshipping the wrong god. Satan has suffered from defamation of character long enough. Free Satan! [pun intended]