The short answer is no, adcoms only look at your overall GPA and not the rigor of your schedule.
The long answer is that yes, the more credits you have the better. However, those pre-matriculation credits could actually hurt you, depending on what grades you received. Basically if they were good grades then you are in good shape because they will end up counting towards your GPA. If they are bad grades, they still count, sucks for you.
Many people on SDN claim that the actual courses that you take do not matter. I for one have heard numerous pre-med advisors and adcom members say that graduate-level courses and course overloads are looked upon highly favorably. However, the caveat is that the applicant with such courses and overloads still needs to maintain a very high GPA in relation to those students with less rigorous courseloads. With that in mind, your advanced credits will help you to be able to take these classes, and therefore bolster your application. Not to mention that you will get more from college than just spending two years in your introductory courses.
I had a ton of AP and college credit coming in, and it has really helped me out in terms of getting to take courses I have wanted. Because of this advanced credit and course overloads, after this year (my soph year) I have 7 courses combined remaining for my double-major and curriculum requirements. This will be nice because I can either graduate early or just stick around and take a bunch of grad-level courses that interest me. I also already have a solidified GPA because of all of the college courses that I took before I came to college.
So the gist of this long-winded response is yes, advanced credits are good (kind of obvious I guess).