#2 OSU was nowhere close to elite. Our defense was very, very good but our offense was mediocre at best. When you start at OSU and then your next stop is Syracuse because that's the best you can get, you know things didn't go well.
#16 Iowa was half of a team. You shut them out and won by 26 and that was only good for their third worst shutout loss of the season.
#4 Alabama was probably one of Saban's five worst teams in his entire time at Bama. FFS they needed a hail mary prayer to get by a pathetic Auburn team that was boatraced by Maryland without their QB.
#2 Washington was a great story and a fantastic offense, but their defense was truly awful. They were very similar to TCU last year only this year you guys didn't shit down your leg and also got some extremely favorable officiating calls that turned the tide of the game.
All in all, congrats on going 15-0. You beat OSU and Bama (barely) in down years, and beat an upstart Washington team that was extremely lucky to be unbeaten as long as they were. Nobody you beat is remotely close to being one of the more elite teams of the CFP era.
I'd argue our defense was good but not great. Didn't have a pass rush. Combine that with a decent but not great offense and you have a good team but not a championship caliber team. And, frankly, they proved that over the course of the season. There wasn't a single game where i thought anything outside of "this is a pretty mediocre Ohio State team".