Ben R. is better than Sanchez and I'm not even considering thinking any other way...
I would take Brady, Manning, Brees, Rodgers, and Rivers over Ben R. without hesitation. I would then consider taking Matt Ryan and Matt Schaub over him as well.
Here's the question you have to ask yourself. If you put Brady, Manning, Brees, Rodgers and Rivers on the Steelers, would their seasonal outcomes be different? I, personally, don't think so. He could win the Super Bowl this year and it wouldn't change my mind either.