Tough call with all the playoff scenarios, but it was bound to happen as things have worked out a little too tidily in previous years with the playoff, other than the minor OSU, TCU, Baylor conundrum 2 years ago. It does not sit well with me that a team that did not qualify for it's conference championship gets into the playoff. But OSU does have the best resume of the Big Ten teams. PSU had the easiest draw of crossover opponents, lost to UM 49-10 and needed 2 blocked kicks at home vs OSU to miraculously pull out a game they trailed by double digits for most of with 2 weeks to prepare while OSU had previously beaten Wisconsin in OT on the road the previous weekend. It was basically the perfect storm of events that weekend and that is the only real accomplishment on PSU's resume when looking at individual wins. And then of course that 21 point road win vs Oklahoma for OSU OOC.
And as for OSU-UM, yeah that one was settled too, just barely. UM looked like the better team most of the day. Gripes with the PI calls were legitimate. As for "the spot". I looked at that thing I don't know how many times. Disapointing that there wasn't a better angle (or any other angle at all) on that particular play, but it looks to me like forward progress had Barrett just at that line (and not an inch beyond) and good for a first down, and then he is immediately pushed backwards. Still it's difficult to see as the ball is tucked into his arm with his body blocking full view too of the ball. His arm appears to be at the line or just beyond so it depends on where the ball is in relation to that. I'm not sure how anyone can say "obviously" one way or another on that call, especially in real-time.
If Clemson loses or Colorado upsets Washington, then oh boy, I don't know. If you put OSU in over PSU-Wisconsin based on "resume", then you'd probably have to do the same thing with Michigan. UM over PSU is an easier call than UM over Wisconsin as Wisconsin would have a quality OOC win, an OT loss to OSU and close road loss to UM. But I don't think you can put in say Colorado over UM based on UM's 17 point head-to-head win, and Clemson if they lose I'd think that knocks them out. However I don't think Clemson is losing.
All I know is the last time UM-OSU, and the Big Ten itself, was talked about this much both before and then after The Game regarding rematches, and post season ramifications, both teams crapped the bed in their bowl games and it ushered in a decade of SEC dominance and Big Ten mediocrity. So let's hope there's not a repeat of all that.