Skada isn't really any more or less accurate than recount, just often called so for no reason other than it having different numbers.
But hardly anyone wants to look into WHY the numbers are different.
Different definitions of DPS, since there is no official or agreed upon standard to which we should be adhering.
Recount became the "de-facto" standard due to being the first to offer a good toolkit and unlike most continued to be updated, much like how people still recommend Quartz or Pitbull.
Recount offers more tools than Skada, but no meter should be used as a ranking against other players without a good look at more than a single number.