Maybe Pioli misheard people at the sports bar saying, "If you want to score, you have to have Daboll."
This isn't exactly a guy with a great performance record. I think the idea of taking an unknown guy is that you take an unknown guy who's been doing great things, not an unknown guy who lives near the bottom of the rankings.
In the final seven games of the 2013 season, the Chiefs averaged 34.6 points per game, scored 38 points or more 4 times, and went 2-5. The NFL has ruined the sport.