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  COU Divergence Analysis
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                      COU A                             COU B
                Name  COU1: Cardiopulmonary bypass use (Class II)  COU2: Ventricular assist device use (Class III)
        Device class  Class II                          Class III
    Model risk level  MRL 2                             MRL 5
            Decision  Accepted                          Not accepted
     Assurance level  Medium                            Low
           Weakeners  6                                 1

══ Weakener Patterns (5) ══
  ┌────────────────────────────────────────────────────────────────┐
  │   Pattern    │  Severity  │  COU A  │  COU B  │    Status    │
  ├──────────────┼────────────┼─────────┼─────────┼──────────────┤
  │ W-AL-01      │ [High]     │   ✓     │   ✗     │ ◆ divergent  │
  │ W-AR-05      │ [High]     │   ✓     │   ✗     │ ◆ divergent  │
  │ W-EP-01      │ [Critical] │   ✓     │   ✗     │ ◆ divergent  │
  │ W-EP-02      │ [High]     │   ✓     │   ✗     │ ◆ divergent  │
  │ W-EP-04      │ [High]     │   ✗     │   ✓     │ ◆ divergent  │
  └──────────────┴────────────┴─────────┴─────────┴──────────────┘

══ Compound Patterns (2) ══
  ┌────────────────────────────────────────────────────────────────┐
  │   Pattern    │  Severity  │  COU A  │  COU B  │    Status    │
  ├──────────────┼────────────┼─────────┼─────────┼──────────────┤
  │ COMPOUND-01  │ [Critical] │   ✓     │   ✗     │ ◆ divergent  │
  │ COMPOUND-03  │ [High]     │   ✓     │   ✗     │ ◆ divergent  │
  └──────────────┴────────────┴─────────┴─────────┴──────────────┘

══ Summary ══
  COU A (COU1: Cardiopulmonary bypass use (Class II)):
    [Critical] 2
    [High] 4
  COU B (COU2: Ventricular assist device use (Class III)):
    [High] 1

  7 divergence(s) detected

══ Divergence Explanations ══

  [Critical] COMPOUND-01 — only in COU A
    COU1: Cardiopulmonary bypass use (Class II): Critical and High severity weakeners coexist — compounding risk escalation.
    COU2: Ventricular assist device use (Class III): pattern does not fire.

  [High] COMPOUND-03 — only in COU A
    COU1: Cardiopulmonary bypass use (Class II): Assurance level is not Low, yet Critical weakeners exist — stated assurance level may be overstated.
    COU2: Ventricular assist device use (Class III): pattern does not fire.

  [High] W-AL-01 — only in COU A
    COU1: Cardiopulmonary bypass use (Class II): Validation result has no uncertainty quantification — aleatory uncertainty is uncharacterized.
    COU2: Ventricular assist device use (Class III): pattern does not fire.

  [High] W-AR-05 — only in COU A
    COU1: Cardiopulmonary bypass use (Class II): Validation result has no prov:wasDerivedFrom — comparator data source is absent.
    COU2: Ventricular assist device use (Class III): pattern does not fire.

  [Critical] W-EP-01 — only in COU A
    COU1: Cardiopulmonary bypass use (Class II): Claim has no prov:wasDerivedFrom link to evidence — provenance chain is broken.
    COU2: Ventricular assist device use (Class III): pattern does not fire.

  [High] W-EP-02 — only in COU A
    COU1: Cardiopulmonary bypass use (Class II): Validation result has no prov:wasGeneratedBy — generation activity is missing.
    COU2: Ventricular assist device use (Class III): pattern does not fire.

  [High] W-EP-04 — only in COU B
    COU2: Ventricular assist device use (Class III): Credibility factor is not assessed but model risk level exceeds 2 — unassessed factors at elevated risk weaken the credibility argument.
    COU1: Cardiopulmonary bypass use (Class II): pattern does not fire.
