It's no secret how Gonzaga is going to play. The Bulldogs are going to push pace - they have the second-shortest average length time of possession - and attack from everywhere on the court. They can do this with such awesome talent in Drew Timme, Corey Kispert, Joel Ayayi and Jalen Suggs. 
This is why Gonzaga leads the nation in scoring at 92.9 points a game. The Bulldogs also are No. 1 in the country in field goal percentage at 55.3 percent. No matter how high the oddsmaker sets the total, Gonzaga seems to go above it. The Over has cashed an amazing 71 percent of the time in Gonzaga's last 55 games. 
I envision another Over the total in this matchup. 
Creighton averages 78.4 points a game, which ranks 42nd in the nation. The Bluejays are 29th in field goal percentage and 52nd in 3-point accuracy. Going by KenPom.com's advanced metrics, Creighton ranks 23rd in offensive efficiency. 
So it's obvious the Bluejays can hold up their scoring end. The key question is what kind of pace will the Bluejays employ? Opponents, of course, have tried to slow down tempo against Gonzaga. That doesn't work. You have to go back to Dec. 2 to find the last time Gonzaga didn't win by double-digits and that was against West Virginia. It's the only instance of the unbeaten Bulldogs not winning by at least 10 points all season.  
The Bluejays play their best when they push tempo. Creighton ranks 23rd in the adjusted KenPom.com offensive efficiency ratings. 
My conclusion then is the oddsmaker has set this total too low.