Well, I thought it was understandable for the poll but probably because the characters were really that good. Even place 2, though I should have known the real reason but again, it's not like you're voting on a character that doesn't appear hardly.
Fun fact: the number of votes really outshine Naruto. I'm starting to think they just pass through the series with no given thought...
How many people voted?
Nanatsu no Taizai prob had like 200,000 votes or so