False.
Did you even play all the stories? Only the Jedi Knight actually has a strong connection to the Emperor and actually has companions tied to the Emperor via Kira and Lord Scourge. All other classes randomly meet the real Emperor after SoR, a very weak connection. Not even the SW got the honor yet not only did the JK meet the Emperor in his story but was also interacted with him a great deal.
It's also why the story is so force intensive.
The Jedi Knight is the default for the story and it only makes sense if you're the JK aka the chosen one that Lord Scourge canonically saw defeating the Emperor via the novel.
This is canon to SWTOR.
The one destined to beat the Emperor isn't the other classes, it's the Male Jedi Knight.
Despite this fact I still prefer my female Bounty Hunter and male Sith Warrior. Story flows so much better on my JK however because they're the template used for it so they better fit more than the other 7 classes.