And Joseph should take 100% of the blame for the gong show that is Edmonton's offense? The coaching change and demotion, the instability at QB, the protection problems, the running back saga, receivers not making plays ... that's all on Joseph, right? Come now. If you believe in one guy, you give that guy a chance to bounce back even when he's struggling. Throwing a rookie QB into the fire because you figure it "can't get much worse" is a sure-fire way to mess with that rookie's confidence. Nichols is new to the league, and will be facing a tough, veteran Calgary defense. He won't have receivers wide open, because he won't be playing a prevent defense.
This is a playoff game for Edmonton. To me, you go with your most experienced QB, the one who gives you the best possible chance to win right now (forget upside and the future, think about the present). That's Kerry Joseph.