While I can appreciate your snark, think it through boss.
If a fast player who relies on pure speed, say, a wide receiver, takes longer to get up to speed or come out of a break due to the higher grass while a pass rush is simultaneously collapsing on a quarterback, it will absolutely affect a given play. The QB has the same amount of (limited) time, but even a half second impact on a skill player will impact the game. Even if he dusts the DB, the play will take longer to develop. In this sport, half a second can make or break a play. Half a second could result in a sack or a throwaway. And knowing that slight delay in a play developing will exist, Northwestern can cheat closer up to guard against the run.
Northwestern people have openly affirmed the impact of their grass on a given game. Will it be enough to completely disrupt Ohio State? Of course not. I'm calling for a 28-point win.