Yeah, I get the idea of effective clinch... But think about this...
Only one of PU and UW has clinched--we just don't know which one yet. Worst case for the winner is 14-6.
The loser of that game could finish 13-7.
Illinois is currently 12-4 and could conceivably finish as low as 12-8. However, let's assume that they lose to tOSU, M, and IA, the three teams currently sitting at 7 losses, and beat PSU who is a non-factor. Then they're at 13-7.
That would give tOSU a win over Illinois, but two more losses (they have 5 games remaining, let's say they lose to MSU and M who are the remaining 7-loss teams). They're at 13-7.
Rutgers can win out without affecting any remaining 7-loss teams. So they can get to 13-7 with a home win over UW, and then wins over teams below them in the standings.
Iowa and MSU can conceivably both finish at 13-7 because they don't play each other. Michigan can finish 13-7 but only if they beat BOTH IA and MSU, meaning M at 13-7 would knock both teams out of 13-7 contention.
So you could conceivably have one B1G team with the sole title at 14-6 or better, and then a six-way logjam at second:
- UW/Purdue loser
- Illinois
- tOSU
- Rutgers
- Iowa
- MSU
You could also have a 5-way logjam, just dropping both Iowa and MSU and replacing them with M.
This scenario isn't likely, of course...