Most likely, yes, these two teams will meet again... and that second game would be more important.
Then again, let’s say that the Steelers win out... and so do the Jaguars. Suddenly, the Taperiots are a #3 seed, which means that they would have to play an extra game. Not only does that mean that the odds of the Taperiots being eliminated doubles (unlikely, but 2 chances is mathematically twice as likely as 1 chance)... it means no bye, no rest, and getting extra tired.
Sure, the Taperiots aren’t our rival. Sure, we haven’t beaten them since 2010. But, let’s not act like the Taperiots don’t care about this game. (This paragraph is not a reply to you, but in response to everyone who says that this game has little meaning to the Taperiots.)
Back to your point, I might start Sutton. If he fairs well, I’d rest Haden/save Haden for Round 2.