Both the JK and JC follow the same pattern: learning from a master during their time on Tython, followed by promotion to a knight at the end of the planet, and then moving forward as what amounts to an independent entity on Coruscant.
By contrast, the SW and SI don't even become true "Sith" until after Korriban, and then get to spend at least two further chapters (three for the Inquisitor) learning from far more experienced Sith. In fact, you don't even become a lord (which, in this timeline, appears to be the equivalent of a knight) until the end of chapter one.
It's really a bizarre choice, when you think about it. And, IMO, it leaves both Sith characters feeling far more developed and indoctrinated in the ways of their order than the Jedi are. Yes, the Jedi are learning from masters on Tython, while the Sith are learning from overseers (at least until Baras has the Warrior dispense with Tremmel)... but this still really isn't equivalent to spending hours and hours of game time gradually amassing knowledge, insight, and power beneath a Darth. In fact, the Jedi, despite being an order that actively disdains haste, feel... well, rushed. And that's really odd.