The biggest problem with Wahl-O-Mat in my view is that it only looks at what parties claim they will do, not their historical voting record. There had been some discussion around this topic this election cycle, so perhaps they will try to address it in future iterations.
I have this simple strategy. I base my decision for who to not vote for based on the behavior of the parties and my decision for who to vote for based on their political program. It's not very surprising that the results were the same.