Bourges, who thrashed MiZo Pecs on Wednesday, also finished 7-3 but sealed first place in the standings by virtue of a superior goal differential in their games with Avenida.
Wisla finished 6-4 and ended up in third spot with MiZo coming in fourth.
Le'Coe Willingham had 24 points and 17 rebounds for Avenida, who went in front to stay in the fourth quarter when Anke De Mondt's three-pointer gave them a 14-11 lead.
Avenida won the battle of the boards 45-27.
They also shot much better, hitting eight of 20 from long range while Wisla drilled only two of 11.