Stronghold RatingSR

The Stronghold performance rating used on unicum.gg: roster strength multiplied by how far above even a clan wins, with boosted rosters discounted.

Also known as SR, skirmish rating.

Stronghold results are hard to compare because a clan chooses its opposition and its volume. SR answers a narrower question: how good is this roster, and does it win with it.

SR = roster strength x (win rate / 50%)^1.5 x (1 - boost share)^1.5

Roster strength is the median Personal Rating of the clan above 4,500. The median, not the mean: it shrugs off both the low tail of small accounts and a couple of carries.

Roster strength is measured above a competitive floor rather than from zero, so the gap between an average roster and an elite one is the dominant term. The win factor is neutral at 50% and super-linear, so dominating is worth more than edging it.

The last term is the anti-farming one. Strongholds, Advances especially, get played with boost accounts: small accounts with almost no random battles that exist only to fill a stronghold roster. That absence cannot be faked, so a roster full of them is scaled down.

Volume is not in it at all, which is what makes it a pure skill rating. A battle floor keeps a lucky handful of games off the leaderboard, and SRB is the sibling that rewards volume.

See it on the site

Stronghold ladder

Related terms

Battles-based Stronghold RatingThe Stronghold Rating with battle volume rewarded rather than merely gated, so a clan that has proven itself over hundreds of battles ranks above one with the same SR over twenty.ELOThe paired rating a clan carries per Stronghold tier and on the Global Map, where each battle moves points from the loser to the winner.Personal RatingWargaming's own rating, shown in the game client and on the portal, which grows with the number of battles played as well as with performance.StrongholdA clan's own base, built from buildings that produce industrial resource and unlock reserves, and the battles fought to supply it.AdvancesThe fifteen against fifteen Tier X Stronghold format, where clans attack each other's bases in scheduled events for a larger share of resource.

Every World of Tanks term