Correct, there is a big difference to what is "said" and what is "done". There is no measurement in the Wahlomat that compares previous goals and success rates

Correct, there is a big difference to what is "said" and what is "done". There is no measurement in the Wahlomat that compares previous goals and success rates (e.g. for those parties who were in the coalition that ruled the last 20 years). Perhaps this can be best framed under the term "trustworthiness". But it also somehow applies to other parties: AfD has a pretty low trustworthiness because their goals and actions are often entirely contradictory - e.g. in their election program, they say they are for "transparency", but their party financing is the most intransparent of all.