Nope, that's now how class rebalancing works in ToR. BW bases their class rebalancing on which class is performing best ingame. And "best" is defined using their extensive ingame stat collection system. Which is to say it is using meta average comparisons. So when a class becomes FotM, what you see is a horde of undergeared players still learning to play the class surge into warzones. This actually reduces the meta average productivity of the class and this results in BW buffing that class. This is why snipers are being buffed in 2.0. And that is why they will be further buffed in 2.1. Count on it.
In contrast unpopular classes such as Merc dps and Anni Mara will continue to be nerfed. Once a class gets it's first nerf, certain players leave that class. And the first to do so are the lower performing ones. The better players who can remain viable with the class tend to stay. Thus subclasses that get nerfed actually see their meta average productivity RISE. Which leads to them being nerfed again. This is what happened to operative dps in 1.1 and 1.2. This is what happened to Merc dps multiple times since 1.2. This is what has happened to Anni Mara. And this is what is going to happen in a big way to PT Pyro.
The bottom line here is that BW's ingame stat collection system is unable to account for player migration and shifts in player quality within a class. This has resulted in the puzzling class rebalancing choices that BW has made. But that is how class balance is managed in ToR.
Freaking amazing post.