But the other side of the equation that is yet to be determined, I feel, is what Bill O'Brien can do with a good QB. The right system can work for a player who isn't as mentally skilled.
A good example here is last year, Brandon Weeden, struggling to complete passes in Dallas, goes to Houston and all the sudden lights the world on fire. He demonizes Dallas' release of him and says that the coaching staff was to blame for his failures in Dallas.
But delving in deeper, you can see that Weeden is more comfortable in Bill O'Brien's one-read offense - O'Brien schools his Quarterbacks on looking for specific mismatches, and to target those mismatches.
In 2015, O'Brien ends up having to use QBs like Ryan Mallett and Brian Hoyer, who don't live up to the coaching, and make terrible decisions halfway through the game that alter the course of wins and losses.
The situation came to a head with their original starting QB, Ryan Mallett, when he missed a plane to play in Miami. When Mallett arrived to meet his team, he was told he would be released, and be a free agent.
The comparison between the Weeden in Dallas, and the Weeden in Houston, illustrates Bill O'Brien's ideals perfectly.
In Dallas, where Weeden struggled, the team is used to the QB 1. Diagnosing the Defense, 2. Setting Protection, 3. Guiding the route combos, 4. Setting the RB's blocking assignment, 5. rechecking for blitz, 6. quickly resetting protections, 7. hot route main target, 8. snap the ball with 0 seconds remaining on the play clock and execute the play as called.
Whereas in Houston, the team was used to their QB throwing late game soul crushing interceptions that look like Brain Hoyer is playing three-flags up and throwing the game up for grabs. Weeden was asked in Houston to do one thing: don't throw interceptions. The Motto seemingly being: "Our Defense is awesome: Relax, We've got this."
Houston's mistake was going back to Hoyer rather than stay with Weeden. I'm sure they were worried about Weeden getting the yips in the Playoffs, but irony served them a cold truth when Hoyer just gave the game away. Awful.
My point here is that Osweiller is certainly better than Weeden, if only for having the psychological makeup of a winner. A winner doesn't get benched in Denver, but if he does, he leaves that sorry town the second he gets a chance, because they made a big mistake crossing him.
Just my two cents, but I see the Texans having a rough start to the season against the Bears, where the Bears will keep the game close and maybe even steal a win... It's hard to predict what will happen between two teams with such awful O Lines, but I also see the Texans as being a team with a ton of talent and enough to prove in the most important places, being QB, Coach with chips on their shoulders. WR who are young, talented and hungry to make a name for themselves. DEF: a team literally STACKED on RACKS AND RACKS with talent.
And a QB who has proven to be a winner when given the task: "Our Defense is Awesome. Just relax, we've got this."