As for the game, ND is 14-1. Their road to get here was against a team that's never been good before, a team w/o it's QB, and a team who's allergic to big game wins.
Their best running play vs big-boy teams is their QB not finding a WR and scrambling.
I've been looking for a comp for Leonard, and it's Vince Young before things clicked for him. 'Great scrambler' shouldn't be the first compliment you give a QB. A 66% comp rate with a 137 pass rating is brutal.
But they have a defense. Great pass D. Okay run D. Nowadays having a strong pass D is more important, but OSU has 2 dudes at RB. They'd be smart to make ND show they can consistently stop the run before they start tossing it around to their great WRs.
This could easily be a game that's 28-3 at half. I hope not, but ND is like Penn St - they literally disappear when faced with equal or lesser talent. You might be thinking BUT WHAT ABOUT GEORGIA, but this wasn't the previous few years' UGA team. 23rd in scoring D. QB with a fondness of INTs, but they faced the backup. Hell, their RB, Etienne, averaged 5.9 ypc at Florida and only 5.0 for the Dawgs this year, so their line wasn't up to standard, either.
Those Dawgs ain't bonafide.
If ND wins, and they may win, it'll be a huge upset. ND is probably the big bully for 90% of the country, with all the advantages, talent, etc on their side. But against an OSU, against the teams I listed previously, where the Irish were absolutely curb-stomped, they fall short.