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| Criterion |  Knowledge Modeling IBIS |  Product Strategy ICE Scoring |  Facilitation Nominal Group Technique |
|---|---|---|---|
Purposedifferent | IBIS structures thinking about complex questions as a sequence of issues, ideas, and arguments. The method keeps discussions open without forcing them into premature consensus. | When ideas need sorting quickly, it condenses impact, confidence, and effort into one compact score. It connects customer value, product logic, and decision priorities. The result is captured as an ICE table and top-ideas list. | When loud voices could dominate a round, Nominal Group Technique protects individual thinking time from group effects. It collects ideas separately first and only then enables shared weighting. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 1-3 h | 30-60 min | 60-120 min |
Participantsdifferent | 2-8 | 2-8 | 5-12 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Issue Map, Positions, Argument Notes | ICE Table, Top Idea List | Ranked Ideas, Clarified Options, Group Priority |
Tagsno overlap | RationaleKnowledgeDecision | PrioritizationScoringGrowthDecision | FacilitationPrioritizationVotingInclusion |
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