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| Criterion |  Agile T-Shirt Sizing |  Facilitation Dot Estimation |  Agile Specification by Example |  Agile Ideal Days |
|---|---|---|---|---|
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. | When size or effort can only be estimated roughly, Dot Estimation condenses the group's experience into a quick range. It turns individual contributions into a visible selection. The result is captured as an Effort Heatmap, Risk Signals, and Discussion Targets. | 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 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. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 15-45 min | 5-20 min | 60-90 min pro Feature | 15-60 min |
Participantsdifferent | 2-12 | 3-20 | 3-6 | 2-9 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Size Buckets, Rough Backlog Map, Split Candidates | Effort Heatmap, Risk Signals, Discussion Targets | Example Table, Acceptance Tests | Ideal Day Estimates, Assumption Notes, Capacity Caveats |
Tagsno overlap | EstimationAgileRoadmap | EstimationEffortRisk | AgileRequirementsExamplesBehavior-Driven Development | EstimationEffortAgile |