I think it's almost certainly the NFC's year, I can't see the Panthers, Seahawks or Cards being any worse than even money against any team from the AFC should they reach the Superbowl.
If the Steelers were in the NFC I'd agree with you. This is the year they break the Tebow curse.
The stars are aligning (even though I don't believe in that sort of thing)
Let's look at the stars:
Steelers won Superbowl 40 - (It's now Superbowl 50) 10 year anniversary.
When Steelers won Superbowl 43 they had the toughest schedule in the NFL. - The Steelers have the toughest schedule in the NFL this year.
When the Steelers won SuperBowl 40 they were the 6th seed - The Steelers are the 6th seed.
When Steelers won Superbowl 40 they needed to beat the browns and have the jets lose to make the playoffs.
In order to make this years playoffs the Steelers had to beat the Browns and have the Jets lose.
I offer you synchronicity as the reason why the Steelers will win SuperBowl 50.
Oh and they have the best offense in the NFL - Did I mention that when Steelers won Superbowl 43 they had the best Defense in the NFL?