The Dog Lord said:
LSU 2012 is more important than Florida 2012. It was last game of regular season so the last impression for rankings. They can forgive first game loss with new QB, coach, etc. a lot easier than final week loss.
LSU 2012 was not the last game of the season. We didn't start playing LSU during rivalry week until 2014. We played Mizzou last during 2012-2013.
But yes, the LSU game was more important as it was a mid-season game.
2012 LSU is the obvious answer. The question is more interesting if you make it about each year though.
2021 - LSU. We got jobbed.
2020 - N/A
2019 - Georgia. We got jobbed.
2018 - Clemson. Tough break on that fumble.
2017 - Wake Forest. Any other game would've resulted in Sumlin staying.
2016 - Mississippi State. Trevor Knight doesn't get injured.
2015 - Louisville is the only option. Everything else was greater than 1 score.
2014 - LSU. We got jobbed.
2013 - Mizzou. This is tough, but that was our last game, and they were ranked 5. Definitely would've helped in the end of season rankings and bowl selection.
2012 - LSU obviously
2011 - Sip, assuming we still move on from Sherman.
2010 - Oklahoma St. Arkansas would be tempting, but beating Okie Lite puts us in the final Big 12 championship game.