There's a difference between keybinds and rotations though. I've got 4 bars full of keybinds on my warlock but that's covering mouseover macros, cooldowns, situational stuff. Take away the extraneous parts and you've got 6-10 buttons in the rotation depending on the spec. And you can shrink that down with a decent macro for cooldowns.
My inquisitor by contrast is running around 14. That's on a UI that can't compete with the user-friendliness of WoW's system (Weak Auras, threatplates, elvui), making dot maintenance and cooldowns much more of a pain to keep track of in SWTOR.