I watched the Purdue game, too. I was also one of the most outspoken people before the Nebraska-OSU game saying that Nebraska matched up well and had a good chance to win. I also said immediately after that game that I thought OSU would be a different team when they had everybody back and healthy before the Michigan game. They simply aren't the same team now that they were back then.
As for the SEC we'll see how good they are when everything is over. Nobody questions that Alabama is about as elite as they come, but the rest of the conference is no better than the B1G in my opinion. Head-to-head, top-to-bottom, the B1G would win a lot more games because they'd win almost everything in the middle.