The argument for the running game vs the passing game has never been about a percent from one to another.. or running just to run.
It has always been, from my perspective been about keeping the defense off balance in their pre-snap reads and avoiding giving the defense an advantage before the ball is snapped. It sounds insignificant, but it is all about the split second that forces the defense to read the play at the snap and pause them even for the slightest moment to allow the offense to gain the advantage.
The winning element to football always has been and always will be dictating your will upon the other team. You win that battle, thy force will be with you more often than not.
I don't give two pinches less about the type of offense you run.. power run, run and shoot, whatever... if you can dictate your will upon the defense and force them to adjust their gameplan.. advantage you.
Same principle on defense but the target is slightly different.. there it is all about taking offensive elements away and then forcing them to become predictable to enhance your chances of making a play.
Hence.. why I maintain, catering to the glory boys that are the QB's and making them out as the end all be all is a mistake in most cases. Sure there are special players at the position, just like any other position, the truly make them special. But for the most part, just because they play the position of QB doesn't make them any more vital to your success than most any other position upon the team.
"The oranges are dry; the apples are mealy; and the papayas... I don't know what's going on with the papayas!"