Originally Posted by
Zeherah
The simulation on my site is primarily used to figure out your shot counts and uptime of specific abilities. It is used to calculate your dps but only indirectly- basically once the shot counts are figured out the math is applied to calculate the expected dps for each ability on average then added up. It's not a full simulation in the way a program like simc works where the dps is basically calculated directly through the sim, by tracking everything that happens and calculating damage for each ability used directly, taking into account what is active when the shot is fired.
Simc also runs many iterations of the simulation to determine dps, which is why the results can vary a bit from run to run. The dps should always be the same when using my site as true randomness isn't implemented at any point, only estimated.