Both. It's a no contest.
Meaning in standings wise, you can be tied in the wins or losses column and that will tie you overall.
The MAC wasn't expecting someone to have the potential to be tied in BOTH columns. If UB loses, they are the 5 confirmed. If they win, they are double tied. Meaning that they will be tied with Ohio/Kent for the 2/3 as well as Akron for the 4/5. From the looks of the current standings, the MAC lumped all the teams together (which is a huge advantage for Akron who has is a game behind Ohio).