“fair” is subjective.
“Is it wrong to want the same treatment for each class?”
If you want the classes to be different and have their own flavor, maybe. You could argue that the ‘flavor’ of a class should come in the way it kills enemies instead of the way it moves around, but movement is part of each class’s “kit”, and we don’t want those kits to be the same. By definition, the more different the classes are, the less “fair” it will be in very specific circumstances. Each class should have strengths AND weaknesses. Something that stuck out to me earlier was you saying that 4/5 classes have it one way, and that sentinel should be included. (I’m paraphrasing). In my mind, that just means you feel movement abilities are one of the sentinel’s weaknesses. There’s nothing specifically wrong with that, if they want each class to have strengths and weaknesses. Whether it’s TOO MUCH of a weakness is definitely up for debate. It’s my least played class, so i can only talk about it in terms of the theory of game balance and such. I’m not disagreeing with you. Like I said, I don’t really like the sentinel’s movement skills either, and I ALWAYS go for the 1 second of invulnerability when I play my rogues, so I can relate to what you feel.
My advice would be to stop assuming that the movement abilities have to be “equal” in some way, and just describe what you feel the sentinel is lacking when it comes to movement. Hopefully a dev can pop in and address that aspect of it. Something like “I feel the sentinel struggles when using movement abilities to travel long distances while avoiding damage”. I have a feeling that sentinel has that weakness on purpose. I don’t particularly like that in an ARPG, but I don’t want to see something like the generic D3 “roll” on consoles either.