Each facet number below is a z-score — a comparison to the whole competitive roster this window. Zero is the roster average; +1.0 is one standard deviation above (roughly the top 16% of factions on that facet), +2.0 is exceptional; the scale mirrors going down. The four facets — win rate, top-cut conversion, blowout margin, consistency — combine into the Strength Index composite, weighted on the tier-list page. Top players is a comparison layer: the curated top-player tier list, shown beside the results but never blended into the composite.
| Detachment | Games | Prevalence | Win rate | VP diff |
|---|---|---|---|---|
| Talons of the Norn Queen | 666 | 35% | 51.4% | +2.8 |
| Assimilation Swarm | 368 | 19% | 53.4% | +4.3 |
| Vanguard Onslaught | 368 | 19% | 46.8% | +0.3 |
| Ambush Predators | 341 | 18% | 45.5% | -1.6 |
| Subterranean Assault | 268 | 14% | 46.4% | +0.2 |
| Invasion Fleet | 225 | 12% | 50.7% | +1.4 |
| Crusher Stampede | 192 | 10% | 49.2% | -1.2 |
| Synaptic Nexus | 168 | 9% | 48.4% | +1 |
| Warrior Bioform Onslaught | 116 | 6% | 48.7% | -0.5 |
| Unending Swarm READ WITH CARE | 5 | 0% | 60% | +2.2 |
| (unresolved detachment) | 290 | 15% | 48.5% | -1.9 |
| Build | Games | Share | Win rate |
|---|---|---|---|
| Assimilation Swarm + Talons of the Norn Queen | 312 | 16% | 54% |
| Ambush Predators + Vanguard Onslaught | 296 | 16% | 46% |
| Subterranean Assault | 268 | 14% | 46% |
| Invasion Fleet | 225 | 12% | 51% |
| Crusher Stampede + Talons of the Norn Queen | 174 | 9% | 50% |
This window (singles): 48.8% win rate over 1439 games.
The condensed composition behind these finishes is in TOP LISTS below.
The lists behind this faction’s strongest finishes this window — identified here by placing, event, and field; the complete list lives at the source on BCP. Composition is condensed to datasheets and points; no rules or profile text.
Across the 36 Tyranids armies that went undefeated or one-loss this window, ranked by how often each unit appears. Faction-anonymous — the lists are counted, never attributed to a pilot.
Editorial perspective coming. The Editor’s analysis of this faction’s current competitive position will appear here as the dossier program rolls out.