Why is Non Steelers fan rooting for the Packers?

I mean I live 15 minutes from Philly and is surrounded by Eagles fans. You think all the Eagles fans would root for the Steelers because its another PA team and the Packers beat them in the playoffs. I mean Im biased because Im a Steelers fan but The Packers had trouble beating a 3rd String QB on the Bears and the Steelers defense is probably as good or better than the Bears Defense. I mean I can take all this Trash Talk but its so Strange how they are rooting for the Packers. I mean it's a landslide for Pro Packers.