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| Criterion |  Agile Ideal Days |  Growth A/B Testing |  Product Discovery Test Card |  Product Discovery Learning Card |
|---|---|---|---|---|
Purposedifferent | When effort needs to be thought of as real working time, it offers a simple common denominator for comparison. It sorts work by value, risk, and delivery ability. The result is captured as Ideal Day Estimates, Assumption Notes, and Capacity Caveats. | When two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | The Learning Card connects traceable test results to a reasoned next action while keeping the limits of the insight visible. |
Complexitydifferent | Low | High | Low | Low |
Timedifferent | 15-60 min | 1-4 Wochen | 20-35 min | 25-40 min |
Participantsdifferent | 2-9 | 1-6 | 1-5 | 1-5 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Ideal Day Estimates, Assumption Notes, Capacity Caveats | Experiment results, Decision log, Learning summary | Test Card with a pre-set threshold | Learning Card with evidence and next action |
Tagsno overlap | EstimationEffortAgile | ExperimentsGrowthAnalyticsValidation | ExperimentsValidationDiscoveryHypothesis | ExperimentsValidationDiscoveryLearning |