I don't think there is any question as to which QB has the most upside - Bradford. But as well all know, there are mitigating factors that make things less clear as to the respective values of Bradford and Foles.
Nick isn't exactly chopped liver. He put up monster numbers in 2013, and his more average numbers in 2014 were just that - average, not terrible. And he still has upside. As for the "injury prone" knock against him, I'll take his injury prone over Bradford's any day. His concussion, broken hand in week 17 of 2012, and broken collarbone of 2014 all added together means about the same number of lost games as Bradford had after is first ACL tear. And none of those injuries requires extensive rehab. Bradford is now coming of his 2nd ACL tear to the same knee, and that was the straw that broke the camel's back with his Rams tenure. The Rams have had two seasons go straight into the $hitter thanks to Sam's ACL, and given the option to get someone like Foles or risk another season with Sam's shaky knee, I fully support what the Rams did.
I really liked Sam, and do think he was better than a lot of his critics give him credit for. With the Rams, he's had some lousy coaching, too much coaching turnover, mediocre supporting cast, and just when the WR's we've taken start developing, he had not one, but two ACL tears in consecutive seasons. No matter how hard we wish things were going to be different, the fact is that things were not going to work out for him in a Rams uniform. It was time to move on. Good luck Sam - except when you play us!