74.85% of you stood with the Tieflings, and 25.15% of you sided with Minthara. Good outweighs evil, it seems.
Then make it more compelling to side with Minthara.
This reminds me of something Peter Molyneux said for Fable II, pre release; very few, if any, players took the 'evil' options in Fable I apparently, and the same was with Fable II apparently. Fable III had 'evil' choices but it was more 'needs of the many' stuff since you were a king/queen.