I'm surprised the line is this high as Bowling Green was the preseason pick to win the Mid-American Conference this season. I think the oddsmaker is underrating the Falcons based on them coming off an 88-64 home loss to Ball State this past Tuesday and Buffalo having defeated Bowling Green eight of the last nine times at home. 
Spectators haven't been allowed in Buffalo home games this season so that knocks down some of the Bulls' home-court edge. 
Bowling Green should be in bounce back mode. The Falcons had won their first five MAC games. They probably have the conference's top player, senior guard Justin Turner. He scored 33 points when Bowling Green defeated Buffalo, 86-78, back on Dec. 6.