Undefeated means you're in. Scoobs is right. Since ALA lost, now there is an argument because of undefeated/not undefeated. Doesn't matter who you played. ALA, having lost, now creates some questions.
This logic doesn't make sense to me (or perhaps I'm not understanding your argument). You say undefeated means you are in. So if Wisconsin goes undefeated they are in. Then you say since AL lost, it creates questions? What questions? For who?
ETA:
Coming into this weekend, there were 8 teams fighting for the 4 Playoff spots:
Alabama
Auburn
Clemson
Georgia
Miami
Oklahoma
Ohio State
Wisconsin
Alabama and Wisconsin go undefeated Scenario
If Alabama goes undefeated, that would knock out a 2-loss non-SEC champion Georgia, and a 3-loss non-SEC champion Auburn. So we're down to six teams.
If Wisconsin goes undefeated, that would knock out a 3-loss non-B1G champion Ohio State. So we're down to five teams.
Clemson and Miami play each other next weekend, so one will get knocked out as a 2-loss, non ACC champion. So, now we're down to four teams: Alabama, Oklahoma, Clemson/Miami winner, and Wisconsin.
Only Wisconsin undefeated Scenario
If Wisconsin goes undefeated, that would knock out a 3-loss non-B1G champion Ohio State. So we're down to seven teams.
Clemson and Miami play each other next weekend, so one will get knocked out as a 2-loss, non ACC champion. So now we're down to six teams.
Auburn and Georgia play each other next weekend, so one will get knocked out as either a 2-loss or 3-loss, non SEC champion. So now we're down to five teams.
If Oklahoma wins the Big 12 title, it likely eliminates Alabama as a 1-loss, non-SEC champion. If Oklahoma loses, they are likely eliminated with Alabama getting the bid. So now we're down to four teams: Clemson/Miami winner, Auburn/Georgia winner, Oklahoma/Alabama, and Wisconsin.
Again, I don't see a scenario where Alabama's loss impacted Wisconsin in any way. If Wisconsin goes undefeated, they are in, regardless of whether Alabama had gone undefeated. If Wisconsin loses in the B1G Championship, they are out, regardless of whether Alabama had gone undefeated.
If you disagree, please post your scenario.