Welcome to the Newschoolers forums! You may read the forums as a guest, however you must be a registered member to post. Register to become a member today!
Well, officially a sequential doesn't change for you, it facilitates your gear changes, usually by engaging a clutch for you while you change gears. You'll notice this in many race cars in which it just looks like the guys ripping the shifter back and forth.
Automatics do everything for you, and this also includes paddle shifting. In pure automatics, you put it in gear and the car does everything else. Similarly in paddle shifting you put it in gear and just hit a button when you want to shift and the car again takes care of everything. i.e.- Revs, torgue etc are all regulated by the car during gear changes.