Key legal question
Whether the cantonal court’s maintenance calculation was arbitrary because it used an incorrect combined income.
Extracted holding
Yes. The court had mistakenly used the 2009/2010 income figures for the wife instead of the spouses’ 2010 combined income, which materially affected the maintenance amount.
Extracted reasoning
The erroneous income basis led to a manifestly unsustainable result under Art. 9 Cst., so the award could not stand.