Stat prioities for each class?
To be honest, this subject is a very loaded question. It really all depends on your weapon skills, your utility skills, your trait spec, and whether you’re grouping or soloing. While the ratios you listed up do look like they’re vaguely accurate, I wouldn’t put a lot of faith into them without understanding the big picture of your own character build.
Kind of hard to say which stats to go with for any profession. I mean, it depends on how you want to play that character. Do you want a condition build? Stack condition damage and duration. Do you want a precision build? Stack crit chance and damage. Do you want survivability? Stack toughness, vitality and maybe healing.
I haven’t played every profession yet, but out of the six I have played, I always start by asking myself what kind experience I want from it, then build around it. From what I’ve seen, most, if not all, professions will support any kind of build. Your job is to create that build effectively. But there is no absolute stat-to-profession relationship. As far as I can tell.