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Let’s Talk About Tanks—K-91 Edition

June 15, 2020

To change or not to change, that is the question!

Hey, everyone!

My name is Jeff Gregg, and I am the Lead Designer of World of Tanks Valor. Welcome to “Let’s Talk About Tanks!”

The goal is to highlight specific tanks, one at a time, and really dig down into what makes them tick, how they are being used, and which approaches may be taken to improve them if necessary.

This article focuses on the K-91! Let’s get started.

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Summary

The skill of the player doesn’t seem to impact the tank.

The higher population of high-skilled players seems to be pushing this tank higher in terms of its win/loss rate, but not dramatically so.

Based on this, no changes will be made to this tank.

Win Rate

Below, we see a grey curve (representing the skill of ALL players) and a blue curve (representing the skill of the players using this tank). The higher the curve, the more players at that skill level are using the tank. We can see that most players are right in the middle / usually successful at around a 50% win/loss rate. As you go towards the extremes of low and high skill, there are fewer players.

Now we might ask: “There are players with a 100% win rate?!” or “There are players with a 0% win rate?!” Those are likely players that played once in this tank and won or lost and then stopped—super low occurrence outliers.

The lower battle count causes a bit of a spiky blue line, but we can see this tank tends to favor more skilled players very slightly.

Let’s look at the tank’s win/loss rate compared to skill. In the picture below, we see two lines, one that represents the entire population’s win/loss rate and another that represents this tank’s win/loss rate.

The K-91 performs neither better nor worse for all players at all skill levels. It has nearly a perfect overlap with all other Tier X tanks and skills. That might indicate that the elevated win rate for this tank is due to the fact that it attracts higher skilled players (although only slightly).

Damage

Damage per battle is average to slightly below average. It is on the lower end of the medium tanks at Tier X, but eclipses all light tanks:

Survivability

How often does this tank survive a match? Survival averages ~28% but is fairly inconsistent, depending on the day. It spikes at about 32% and sometimes dips to as low as 19%.

We will continue to monitor this tank and once it has at least 5,000 more battles we will look again. Once we have that amount of info, we will report back here on what the results were and (if necessary) what the next steps will be.

If you have feedback about this process or have further questions, reach out! Stay tuned here for results of the test and for which next tank we will focus on next.

See you on the battlefield!

Read the full in-depth article by Jeff Gregg, Lead Designer, in the dedicated Forum Thread.