Denver will use the picks from the Bears to trade up and select Mark Sanchez in the top 10, maybe even the top 5. Sanchez is high on their radar at this point.
You're right, draft picks are never a guarantee for success in the NFL. Proven free agents are always the first choice. And Denver's front office has not proven to be the best in the NFL, lately. We'll see how it pans out for the Broncos.
I do know that if the Ravens were given two 1st rounders, you better believe they would fully utilize those picks and I would feel confident that they would draft good players. The Ravens have proven that they definitely know how to scout talent, sans Kyle Boller.