As walkin' trails mentioned they're two very different firearms, and the biggest difference between the two is that the 9C was used. From what I've read most triggers on all guns need a little time to "break in". Keep sending some lead down range see if it doesn't get any better. Also keep in mind the Shield is a SD pistol, some people prefer the heavier or longer trigger pull given its intended use. I've fired a couple Shields and thought the trigger was great compared to my buddies 40C.