Fascinating article. It has always been my contention that you are looking for trouble any time you are starting a Freshman QB, especially a true Freshman. The problem is the time it takes to master the playbook. It takes repetition, and time to work out the kinks, both in practice and in game situations. When a QB has a couple years of seasoning, hopefully as an early entry, then a redshirt and then a full year playing only in mop up duty, they have learned the playbook and have the timing down cold. You'll just have to see how Barrett does. Sometimes early season success can be particularly cruel and deceiving. A Freshman QB can think they have things down, only to be destroyed by a crafty DC and seasoned secondary.
There is one set of circumstances where Freshmen QB's have more success. It involves a highly skilled, motivated and gifted QB, surrounded by veterans at every position. When that happens, they can make things work. The fact that OSU is breaking in many new guys at OL gives me pause. OSU has a tremendous defense, but I don't know if they will be completely able to carry the team. I don't know, but I think you really now are one year away from significant success.
One last thing: someone here who is more of a stats wizard should find the NCAA stats on Freshman QB's in a starting role. I believe that will corroborate my position (Freshman QB's are trouble) and give you a picture of what OSU might expect this year. (EDIT: yes, you would need to separate true Freshmen from redshirted Freshmen.)