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| Criterion |  Agile T-Shirt Sizing |  Decision Making PERT Estimation |  Agile Specification by Example |  Agile Example Mapping |
|---|---|---|---|---|
Purposedifferent | When effort only needs to be classified roughly, it makes comparability more important than false precision. It helps sort work quickly into manageable sizes. | 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 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. | When a story carries business rules and exceptions, it brings clarity before implementation. It makes examples, open questions, and boundaries visible enough that the logic becomes jointly sound. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 15-45 min | 15-45 min | 60-90 min pro Feature | 30-60 min |
Participantsdifferent | 2-12 | 1-8 | 3-6 | 3-7 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Size Buckets, Rough Backlog Map, Split Candidates | PERT Estimate, Expected Value, Risk Notes | Example Table, Acceptance Tests | Example Map, Acceptance Criteria, Open Questions |
Tagsno overlap | EstimationAgileRoadmap | EstimationUncertaintyRisk | AgileRequirementsExamplesBehavior-Driven Development | Behavior-Driven DevelopmentRequirementsExamplesRefinement |