Yes.
No.Can a good Frost player be better than most other players?
A good Frost player can be better than below average players. However, no matter how great you are at playing Frost, you are not going to be "better than most". Frost is very undertuned at the moment.
Also, keep in mind that this thread is about Frost Mage in Raids. Frost has statistically the worst single target dps. Even the "redeeming quality" of Glacial Fragments does not justify them having a Raid spot over Fire or even Arcane.
This is just not true. 90th percentile as Frost does not put you above any other spec even when they're at 50 or 60. Except maybe Destro or Fury, which are not in a good place at the moment either. You can parse 99 as Frost and still be below specs that actually are fine currently.2. Players who care about performance play fire rather that frost, meaning Frost's logs are lower on average. A good Frost player (90th percentile) still outperforms 50 or 60 percentile players of other classes.
Frost is horrible. There is no going around it.Bottom line is, Frost is not great but not horrible
And yes, 3 average specs are better than 1 good, 1 below average, and 1 that is literally the worst.