For the most part, darkker's right.

There is a real, practical difference in some classes of Accutriggers. There are 3, though Savage doesn't really advertise it well.

1. "Standard" or "hunting" or whatever you wanna call it
2. "Varmint"
3. "Target"

They are same principal, but each has progressively lighter range of trigger pull, and how they achieve that doesn't necessarily come down to just lighter springs.