All levels have the trim on the large ring, Force and Rival used to have it on the small ring, I think the switch was done in 2010 and newer. The trimming action your referring to doesnt happen automatically like Shimano's Di2. When you shift to the large ring, you can tap the left trigger again to move the FD a few mm back but still stay in the large chain ring, tap one more time and it drops the chain to the small ring. This is designed so that you can stay in the large ring and access more of the low gears without chain rubbing the FD cage.