Probably doesn't help that Daneos plays as a Fighter on the dev server...no offense.
I don't know who is providing inaccurate information to you/who your sources are, but this certainly is not the case. Any member who has access to the dev server can create and play on any class, and all classes are tested thoroughly. Also, with that being said everyone who plays on the pre open beta are classified as testers themselves (to a degree).
When testing with the team there are two types of tests conducted: Class specific tests (That only apply to certain classes) and general tests (that apply to all classes).
The resistance and dodge update was a general test that applied to all classes and was not a class specific update.
The problem here was with dex and resistance gear as a whole which was why it was updated. Players would wear dex/resistance gear and it would be like non existent. Shadow Knights (who have low hitrate) would land bold strike on a full dex based fighter most of the time and completely ignore a fighters dodge rate. It felt like dodge was ignored completely and classes would not have to bother wearing focus/success rate gear. This is why most fighters didn't bother with dex and would just wear con gear.
The reason why fighters are feeling this update the most is because they are one of the classes with naturally high dodge/resistant rates (especially due to their passive ability that grants them dex).
We are not giving any class special treatment. The team's goal at the moment is to restore the game and keep it similar to how the game was before it shut down.