Ok if you buy the supercharge part here is how Mullen "did" it.
1. You play all 12 games. You rack up zero yards in games you don't play.
2. You ditch Michigan and play two D1AA teams.
3. Your out of conference games are Charleston Southern, Colorado State, Idaho and FSU, rather than Michigan, UAB and FSU.
4. You have SoCar and FSU be surprisingly bad on defense.
UF played 8 common opponents in 2017 and 2018. UF's offense totaled fewer yards in 2018 against UK, UTn, Vandy and UMo, less than 100 less yards in each case. UF's offense totaled more yards against LSU (55 yards) and UGa (26 yards) and a huge amount more against SoCar (227 yards) and FSU (256 yards). In total UF had 384 or 48 yards a more per game in those 8 games.
The GOOD NEWS is that the two big offensive outbursts were against the last two of these teams UF has played. If you are an optimist, you can believe the light came on the last quarter of the season when you consider Idaho along with SoCar and FSU all games where UF's offense looked good. The bad news is that that was a 5-7 FSU team not an FSU team we usually see. The bad news is that was a pretty bad defense for a Muschamp defense at SoCar. So if you want to be a pessimist you can believe it was the same old same old masked by an easier overall schedule and FSU and SoCar having much worse defenses than they usually do.
Your choice, I am an optimist so I am hoping the truth is in between. Maybe the bowl game will give us more information on that.