About the data
Before we dig into the graphs, we have to discuss the methodology for data collection and make sure we understand where the numbers are coming from and what the advantages and disadvantages of these sources are. If you can't wait you can skip ahead to the data.
All of the data here are coming from the median DPS of the top 100 parses. I prefer to look at the median rather than average for DPS parses, because it eliminates those outliers up on top that can really skew the average. For any given data set I'm taking the median DPS of the top 100 parses for each spec. Once I have all of those, I then calculate the median DPS of all specs. Then each spec is charted as its percentage above or below that median.
This gives us a really easy picture of how the classes are performing against each other and how far away they are from where they should be (at the median).
Advantages of top 100 parses
When we look at the median of the top 100 parses, we know that we're seeing players who have very good gear, are very skilled, have all raid buffs, and are also enjoying good RNG to boot. It's a good representation of how much DPS a spec is capable of putting out in actual in-game content.
Looking at the top 100 parses has three big advantages:
Comparing the classes rather than specs
- We're comparing apples to apples. We're looking at players with similar gear, buffs, skills, and luck levels across all classes -- specifically, very high levels of each.
- In some fights, certain classes have odd jobs like kiting, interacting with mechanics, etc. With the top 100, we can be pretty certain we're looking only at examples of players who were not doing anything to hamper their DPS. These are the lucky guys who didn't have to kite or pull the lever.
- Because the top 100 is, in fact, the best performance players have produced for their class, we are looking at a true potential of the class in real content -- much more accurate than any spreadsheet or simulation. In general, class DPS is balanced around the potential (after all, if you're doing substantially less, you don't need a buff -- you just need better skills, gear or buffs). Don't get me wrong, average DPS matters too, but that's more about balancing spec difficulty and scaling than DPS output.
The primary disadvantage of looking at the top 100 parses is that it disproportionately favors the best DPS spec of any given class. The very best players in the very best gear are typically going to play the very best DPS spec for the fight. If there is a spec lagging behind, far fewer of the best players are playing that spec, and so its numbers fall even further behind, giving a skewed picture.
Rather than comparing all the specs in the game, we're instead mostly going to look at just the best
spec of each class and use that to compare the classes against each other.
After all, I don't care if frost mages are doing 9,000 less DPS than fire mages; if fire mages are doing 20,000 DPS more than anyone else, then we're all going to say that mages are overpowered. And hey, as much as the arcane mages might complain, they can just respec to do crazy damage. And in reality, that's just what happens.
It's more important that each class has at least one spec that's competitive than it is that all of their specs are competitive (though we surely want that, too). And a class that might look like its DPS is in the middle of the pack when you look at all specs could turn out to be dead last when you compare it just against the best spec of each class.
Of course, druids and shaman don't have the luxury of just respeccing to the best DPS spec -- they require entirely different gear sets, so we'll be looking at both shaman and druid DPS specs, and then just the best spec of each other class.What is the goal?
One thing to consider before you look at the graphs is exactly what the design goal of the DPS spread should be. Given that every boss has different mechanics that can skew the balance in favor of one class or another, exactly how much deviation is acceptable?
If you draw a line down the middle of the DPS and take the median, how far off of that median is OK due to a combination of boss mechanics and ability balancing, and how far off means that a buff or nerf is needed? Is 10% acceptable, or is that too far? What about 5% off? How close is it realistic to expect the actual raid numbers to be? If a class is 2% below the median, does it need a buff? If it's 2% over, does it need a nerf?
Personally I think that anything within 5% is damn close to dead balanced, and probably means that if you're good at your class, you can top the charts. Let's take a look at the actual numbers in part 2.