I think a lot of this game will be how Fields responds to pressure. If Nebraska can keep things in front of them, Fields has never been under pressure to perform outside of a couple of carries in the SEC title game last year. All his other time has essentially been in blowouts where the game was decided quickly and he is able to ride the wave.
If Fields can handle the pressure, this probably gets ugly for Nebraska and if he has some struggles, this might not be the tsunami most people expect.
***Or Dobbins bails him out and OSU runs for 300+ yards, whatever.