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| Criterion |  Decision Making PERT Estimation |  Agile Affinity Estimation |  Agile Specification by Example |
|---|---|---|---|
Purposedifferent | On complex initiatives, a plain average tends to understate just how uncertain the outcome really is. It separates options, evaluation criteria, and open risks. The result is captured as a PERT Estimate, Expected Value, and Risk Notes. | When many tasks need to be classified quickly, it sorts them by perceived effort and similarity. It reduces the effort of fine-grained estimation for large volumes. | When business rules need to become precise, it ties language, example, and test together. It sorts work by value, risk, and delivery ability. The result is captured as an Example Table and Acceptance Tests. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 15-45 min | 30-90 min | 60-90 min pro Feature |
Participantsdifferent | 1-8 | 3-12 | 3-6 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | PERT Estimate, Expected Value, Risk Notes | Affinity Size Map, Grouped Estimates, Unclear Items | Example Table, Acceptance Tests |
Tagsno overlap | EstimationUncertaintyRisk | EstimationBacklogRelative sizing | AgileRequirementsExamplesBehavior-Driven Development |
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